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    Ice climbing

    Ice climbing, as the term indicates, is the activity of ascending inclined ice formations.

    Usually, iceclimbing refers to roped and protected climbing of features such asicefalls,

    frozen waterfalls, and cliffs and rock slabs covered with ice refrozen from flows ofwater. For the purposes of climbing ice can be broadly divided into two spheres, alpine

    ice and water ice. Alpine ice is found in a mountain environment, usually requires an

    approach to reach, and is often climbed in an attempt to summit a mountain. Water ice

    is usually found on a cliff or other outcropping beneath water flows. Alpine ice is frozen

    precipitation whereas water ice is a frozen liquid flow of water. Most alpine ice is

    generally one component of a longer routes and often less technical, have more in

    common with standard glacier travel, while water ice is selected largely for its technical

    challenge. Still technical grade is independent of ice type and both types of ice vary

    greatly in consistency according to weather conditions. Ice can be soft, hard, brittle or

    tough. A mixed climbing is when ascending involve both ice climbing and rock

    climbing.[1][2]

    Techniques

    A climber chooses equipment according to the slope and texture of the ice. For

    example, on flat ice, almost any good hiking or mountaineering boot will usually

    suffice, but for serious ice climbing double plastic mountaineering boots (or their older

    stiff leather equivalent) are usually used, which must be crampon compatible and stiff

    enough to support the climber and maintain ankle support. On short, low angled slopes,

    one can use anice axe to chop steps. For longer and steeper slopes orglaciertravel,

    crampons are mandatory for a safe climb. Vertical ice climbing is done with cramponsand ice axes (those specific to vertical ice generally being called technical ice axes, or

    ice tools); climbers kick their legs to engage the front points of the crampons in the ice,

    and then swing the axe into the ice above their heads. This technique is known as front

    pointing. The strength of the ice is often surprising; even if the axe goes in only a

    centimeter or so it is enough to pull up on. If a climber is leading, she/he will need to

    placeice screws asprotection on the way up (seeclimbing system). Most mountaineers

    would only consider the last scenario true ice climbing; the less steep variations are

    routine aspects of wintermountaineering.

    Some important techniques and practices common in rock climbing that are employed

    in ice climbing include knowledge of rope systems, tying in, belaying, leading,abseiling, and lowering. Beginners should learn these techniques before attempting to

    ice climb. It is highly recommended that one acquire knowledge from experts and

    experienced ice climbers.

    [edit] Rope systems

    Single, double, and twin rope are the three main rope systems used in ice climbing. The

    single rope system, which is suited for straight climbing routes, is the most commonly

    used system in the world. Also often used in climbing is the double rope system which

    is a more flexible system than the single rope system. Lastly, the twin rope system,

    which uses two twin ropes in a single rope system, is used for longer multi-pitch routes.However, this type is not often used in climbing.

    http://en.wikipedia.org/wiki/Climbinghttp://en.wikipedia.org/wiki/Climbinghttp://en.wikipedia.org/wiki/Icefallhttp://en.wikipedia.org/wiki/Icefallhttp://en.wikipedia.org/wiki/Icefallhttp://en.wikipedia.org/wiki/Waterfallhttp://en.wikipedia.org/wiki/Mixed_climbinghttp://en.wikipedia.org/wiki/Rock_climbinghttp://en.wikipedia.org/wiki/Rock_climbinghttp://en.wikipedia.org/wiki/Ice_climbing#cite_note-lowe-0%23cite_note-lowe-0http://en.wikipedia.org/wiki/Ice_climbing#cite_note-1%23cite_note-1http://en.wikipedia.org/wiki/Ice_axehttp://en.wikipedia.org/wiki/Ice_axehttp://en.wikipedia.org/wiki/Glacierhttp://en.wikipedia.org/wiki/Cramponshttp://en.wikipedia.org/wiki/Ice_toolhttp://en.wikipedia.org/wiki/Front_pointinghttp://en.wikipedia.org/wiki/Front_pointinghttp://en.wikipedia.org/wiki/Glossary_of_climbing_terms#Lead_climbinghttp://en.wikipedia.org/wiki/Glossary_of_climbing_terms#Ice_screwhttp://en.wikipedia.org/wiki/Glossary_of_climbing_terms#Ice_screwhttp://en.wikipedia.org/wiki/Protection_(climbing)http://en.wikipedia.org/wiki/Climbing_systemhttp://en.wikipedia.org/wiki/Climbing_systemhttp://en.wikipedia.org/wiki/Mountaineeringhttp://en.wikipedia.org/wiki/Mountaineeringhttp://en.wikipedia.org/wiki/Rock_climbinghttp://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=2http://en.wikipedia.org/wiki/Climbinghttp://en.wikipedia.org/wiki/Icefallhttp://en.wikipedia.org/wiki/Waterfallhttp://en.wikipedia.org/wiki/Mixed_climbinghttp://en.wikipedia.org/wiki/Rock_climbinghttp://en.wikipedia.org/wiki/Rock_climbinghttp://en.wikipedia.org/wiki/Ice_climbing#cite_note-lowe-0%23cite_note-lowe-0http://en.wikipedia.org/wiki/Ice_climbing#cite_note-1%23cite_note-1http://en.wikipedia.org/wiki/Ice_axehttp://en.wikipedia.org/wiki/Glacierhttp://en.wikipedia.org/wiki/Cramponshttp://en.wikipedia.org/wiki/Ice_toolhttp://en.wikipedia.org/wiki/Front_pointinghttp://en.wikipedia.org/wiki/Front_pointinghttp://en.wikipedia.org/wiki/Glossary_of_climbing_terms#Lead_climbinghttp://en.wikipedia.org/wiki/Glossary_of_climbing_terms#Ice_screwhttp://en.wikipedia.org/wiki/Protection_(climbing)http://en.wikipedia.org/wiki/Climbing_systemhttp://en.wikipedia.org/wiki/Mountaineeringhttp://en.wikipedia.org/wiki/Rock_climbinghttp://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=2
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    [edit] Tying in

    Tying in entails attaching your rope to the climbing harness. This technique is a must

    particularly when leading a climb or belaying. The commonly used tie-in knot is the

    Figure-of-eight follow through. Once you tie-in, you will create a belay loop which will

    contain your belay device when needed. This technique should be done properly toensure your safety when ice climbing.

    [edit] Belaying

    In this climbing technique, you are going to use either running belays or fixed belays. A

    running belay on ice is similar to a running belay on rock or snow. The leader of the

    climb puts protection and clips the rope through it. The next climber puts away the

    protection. There should be at least two points of protection between the leader and the

    next climber. Fixed belays, on the other hand, require a belayer, belay anchor, and

    points of protection. A belay anchor is attached to a cliff in supporting a belay or

    toprope. In using either a running- or fixed belay, it is necessary that you have enough

    knowledge on boot/ice-screw belay techniques.

    [edit] Leading

    Leading refers to the act of leading a climb and thus, requires a leader and a follower.

    This ice climbing technique entails putting protection while ascending. In doing so,

    leading is done in sections. The leader places the protection as he/she climbs until

    he/she reaches the top of apitch. At the top, the leader builds a belay anchor with which

    to belay the second climber. While the second climbs, he/she removes the protection

    placed by the leader. When the second climber finishes, they both proceed to the secondpitch.

    [edit] Abseiling

    Also called rappelling, abseilinguses a fixed rope to descend. This technique is not only

    used to go down after a climb. It can also be used when trying new climbing routes and

    when there is a seemingly difficult access to the start of a climb. Careful execution is

    important in doing abseiling. There are the possibilities of jammed ropes, ropes

    becoming severed after getting in contact with sharp edges, and other cases of

    equipment failure.

    [edit] Lowering

    Lowering is one of the most common methods of getting down. A belayer at the base of

    the vertical wall ensures that the climber is lowered safely. This climbing technique is

    used when going down routes where there are short, steep walls. This is also used when

    you want to go down faster.

    These are the different techniques used in climbing activities. Keep in mind, though,

    that it is very crucial to learn these skills from expert climbers before attempting them

    yourself.

    http://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=3http://en.wikipedia.org/wiki/Figure-of-eight_follow_throughhttp://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=4http://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=5http://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=6http://en.wikipedia.org/wiki/Abseilinghttp://en.wikipedia.org/wiki/Abseilinghttp://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=7http://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=3http://en.wikipedia.org/wiki/Figure-of-eight_follow_throughhttp://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=4http://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=5http://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=6http://en.wikipedia.org/wiki/Abseilinghttp://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=7
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    [edit] Protecting ice

    Ice screw

    Today the most common protection for ice climbing is an ice screw. Ice screws are

    hollow tubes with sharp teeth on the front end, a hanger eye at the back to clip into, and

    threading around the tube. They are screwed into the ice and can provide very strong

    protection in solid ice.[1] However, because of the variable nature of ice, the strength of

    ice screw placements can vary greatly.[3]

    Ice climbers also use the ice itself as protection. The two most common of suchtechniques are the V-Thread(also known as the "Abalokov" anchor, named after a

    Russian climber who popularised the technique) and the ice bollard. The V-thread is a

    method of protection in which two tunnels are bored into the ice so that they intersect at

    their ends, forming a "V" shaped tunnel in the ice. A sling or cordelette (rope used in

    anchors) is threaded through the tunnel and tied making a loop that is tied into the ice.

    An ice bollard is made when an horse-shoe shaped furrow is carved into less than

    vertical ice with the open end down. A lip is then sculpted in the lower wall of the

    furrow so that a loop of rope can be placed in the furrow that will stay in place in a

    somewhat less severe version of a loop of rope around saddle horn.[3]

    Natural formations, as well as ice hooks and ice pitons are also used as protectionanchors by ice climbers.

    [edit] Ice climbing grades

    [edit] Waterfall ice grading

    This discussion focuses on the waterfall ice rating system as used in the Canadian

    Rockies.

    Testpiece examples are given. Note that ice grading, even more so than other climbingmedia, tends to be subjective and often does not reflect the difficulty of a route at any

    given time. Routes become much easier after the first ascent of the season. This is due

    to the cleaning of chandeliered ice and creation of "hooks", which are pockets formed

    by the tools' picks, reducing the effort expended in cleaning and tool placement.

    Routes with high-flow seeps also tend to become easier as the season progresses due to

    the increase in volume of ice. Low-flow seeps, however (e.g. French Reality, Banff;

    Moonlight/Snowline, Kananaskis), often form early in the season (September-

    November) when the flow is good from latent summer heat, and then slow down or

    even stop with the deepening winter frost; subsequent ablation (and destruction by

    climbing) of the ice often makes for thinner and brittler ice with time.

    http://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=8http://en.wikipedia.org/wiki/Ice_screwhttp://en.wikipedia.org/wiki/Ice_screwhttp://en.wikipedia.org/wiki/Ice_climbing#cite_note-lowe-0%23cite_note-lowe-0http://en.wikipedia.org/wiki/Ice_climbing#cite_note-freedom-2%23cite_note-freedom-2http://en.wikipedia.org/wiki/Abalakov_threadhttp://en.wikipedia.org/wiki/Abalakov_threadhttp://en.wikipedia.org/wiki/Abalakov_threadhttp://en.wikipedia.org/wiki/Ice_climbing#cite_note-freedom-2%23cite_note-freedom-2http://en.wikipedia.org/wiki/Ice_climbing#cite_note-freedom-2%23cite_note-freedom-2http://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=9http://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=10http://en.wikipedia.org/wiki/File:Ice_screw.jpghttp://en.wikipedia.org/wiki/File:Ice_screw.jpghttp://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=8http://en.wikipedia.org/wiki/Ice_screwhttp://en.wikipedia.org/wiki/Ice_climbing#cite_note-lowe-0%23cite_note-lowe-0http://en.wikipedia.org/wiki/Ice_climbing#cite_note-freedom-2%23cite_note-freedom-2http://en.wikipedia.org/wiki/Abalakov_threadhttp://en.wikipedia.org/wiki/Abalakov_threadhttp://en.wikipedia.org/wiki/Ice_climbing#cite_note-freedom-2%23cite_note-freedom-2http://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=9http://en.wikipedia.org/w/index.php?title=Ice_climbing&action=edit&section=10
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    Grading in the Canadian Rockies, especially recently, focuses on the steepness of a

    pitch, and NOT on the more subjective "feeling of difficulty" (mental aspects, e.g.

    protectability, exposure, commitment, etc.) or "technical difficulty" (e.g. chandeliers,

    bonding, etc.) during the first ascent. Hence the downgrading of several notorious

    routes, e.g. Sea of Vapours, which were in poor conditions during the first ascents.

    A common use of the "+" designation is to indicate a higher level of technicality than is

    typical for the grade (e.g. chandeliers, poor bonding, etc.) that is consistent from year to

    year (i.e Wicked Wanda, WI4+, has vicious mushrooms on an otherwise low-angled

    route, and these features always exist from year to year, probably due to the winds).

    Finally, Canadian Rockies WI grading does NOT have anything to do with whether a

    climb is multi-pitch or not. Therefore, a 4-pitch WI5 is not granted WI6 just because it's

    long, and likewise a 4-pitch WI6 is not given WI7.

    WI2 - low-angled (60 degree consistent ice), with good technique can be easily climbed

    with one ice axe. Grades beyond this generally require the use of two ice tools.

    WI3 - generally sustained in the 60-70 degree range with occasional near-vertical steps

    up to 4 metres (Cascade Waterfall, Banff; This House of Sky, Ghost River)

    WI4 - near-vertical steps of up to 10 metres, generally sustained climbing requiring

    placing protection screws from strenuous stances (Professor's Falls, Banff; Weeping

    Wall Left, Icefields Parkway, Banff; Silk Tassle, Yoho; Moonlight & Snowline,

    Kananskis)

    WI4+ - highly technical WI4. (Wicked Wanda, Ghost River)

    WI5 - near-vertical or vertical steps of up to 20 metres, sustained climbing requiring

    placing multiple protection screws from strenuous stances with few good rests

    (Carlsberg Column, Field; The Sorcerer, Ghost River; Bourgeau Left Hand, Banff)

    WI5+ - highly technical WI5 (Oh le Tabernac, Icefield Parkway; Hydrophobia, Ghost

    River; Sacre Bleu, Banff)

    WI6 - vertical climbing for the entire pitch (e.g. 30-60 metres) with no rests. Requires

    excellent technique and/or a high level of fitness (The Terminator, Banff; Nemesis,

    Kootenay Park; Whiteman Falls, Kananaskis Country; Riptide, Banff)

    WI6+ - vertical or overhanging with no rests, and highly technical WI6 (French Maid,

    Yoho; French Reality, Kootenay Park)

    WI7 - sustained and overhanging with no rests. Extremely rare, near-mythical, and

    widely accepted testpiece examples of this grade don't exist in the Canadian Rockies.

    Note that many routes (e.g. Sea of Vapours, Banff; Riptide, Icefield Parkway, Banff)

    have been assigned WI7- to WI7+ but have been subsequently downgraded in latter

    years as they don't meet the strict criteria of steepness. In fact some local ice climbers

    have argued for Sea of Vapours (WI7+ originally) to be downgraded to WI5 or even

    WI4 simply because it's not steep enough.

    http://en.wikipedia.org/wiki/Ice_axehttp://en.wikipedia.org/wiki/Ice_toolhttp://en.wikipedia.org/wiki/Ice_axehttp://en.wikipedia.org/wiki/Ice_tool
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    See Alpinist's Climbing Grades section for a variation on this discussion:

    http://www.alpinist.com/p//climbing_notes/grades

    [edit] Mixed ice grading

    Mixed climbing has its own grading scale that roughly follows the WI rating systemwith respect to its physical and technical demands. Typically starts at M4. Subgrades of

    "-" and "+" are commonly used, although the distinctions are typically very subjective.

    The following table makes a comparison with the WI system and the Yosemite Decimal

    System. Comparing these is rough, and only gives an idea of the relative difficulty; the

    reason different systems exist in the first place is because it's difficult to compare grades

    between climbing media.

    M4 - 5.8 - WI4 - slabby to vertical, some technical drytooling

    M5 - 5.9 - WI5 - some sections of sustained drytooling

    M6 - 5.10 - WI6 - vertical to overhanging with some difficult drytooling

    M7 - 5.11 - WI7 - overhanging, powerful and technical drytooling,

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    Abseiling

    Abseiling (German: abseilen, "to rope down"), rappelling in American English,[1]is the

    controlled descent down a rope;climbers use this technique when a cliff or slope is toosteep and/or dangerous to descend without protection.Abseilingis used chiefly in

    British English, while otherAnglophone countries, except Australia, use different

    terms.

    Slang terms

    Slang terms for the technique include: rapping orrap jumping (American slang),

    abbing (British slang for "abseiling"),jumping, roping down, roping, seiling,

    snapling (Israeli slang), rappling (Hindi slang).

    [edit] History

    The origin of the abseil is attributed[2] toJean Estril Charlet, a Chamonix guide who

    lived from 1840-1925. Charlet originally devised the technique of the abseil (or rappel)

    method of roping down during a failed solo attempt ofPetit Dru in 1876. After many

    attempts, some of them solo, he managed to summit the Petit Dru in 1879 in the

    company of two other Chamonix guides, Prosper Payot and Frdric Folliguet, whom

    he hired (a rather paradoxical move for a guide). During that ascent, Charlet perfected

    the abseil.

    [edit] Equipment

    Ropes: Climbers often simply use theirclimbing ropes for rappelling. For many

    other applications, low-stretch rope (typically ~2% stretch when under the load

    of a typical bodyweight) called static rope is used to reduce bouncing and to

    allow easier ascending of the rope.

    Anchors for rappelling are sometimes made with trees or boulders, using

    webbing and cordellete, or also with rock climbing equipment, such as nuts,

    hexes and spring loaded camming devices.[3] Some climbing areas have fixed

    anchors for rappelling.

    A descenderor rappel device is a friction device or friction hitch that allows

    rope to be paid out in a controlled fashion, under load, with a minimal effort bythe person controlling it. The speed at which the rappeller descends is controlled

    by applying greater or lesser force on the rope below the device or altering the

    angle at which the rope exits the device. Descenders can be task-designed or

    improvised from other equipment. Mechanical descendersinclude braking bars,

    the figure eight, the abseil rack, the "bobbin" (and its self-locking variant the

    "stop"), the gold tail, and the "sky genie" used by some window-washers and

    wildfire firefighters. Some improvised descenders include the Munter hitch, a

    carabiner wrap, the basic crossed-carabiner brake and the piton bar brake

    (sometimes called the carabiner and piton). There is an older, more

    uncomfortable, method of wrapping the rope around one's body for friction

    instead of using a descender, as in the Dulfersitz or Geneva methods used by

    climbers in the 1960s.

    http://en.wikipedia.org/wiki/Abseiling#cite_note-0%23cite_note-0http://en.wikipedia.org/wiki/Abseiling#cite_note-0%23cite_note-0http://en.wikipedia.org/wiki/Climbinghttp://en.wikipedia.org/wiki/Climbinghttp://en.wikipedia.org/wiki/Anglophonehttp://en.wikipedia.org/wiki/British_slanghttp://en.wikipedia.org/wiki/Israelhttp://en.wikipedia.org/wiki/Hindihttp://en.wikipedia.org/w/index.php?title=Abseiling&action=edit&section=2http://en.wikipedia.org/wiki/Abseiling#cite_note-1%23cite_note-1http://en.wikipedia.org/w/index.php?title=Jean_Est%C3%A9ril_Charlet&action=edit&redlink=1http://en.wikipedia.org/w/index.php?title=Jean_Est%C3%A9ril_Charlet&action=edit&redlink=1http://en.wikipedia.org/wiki/Chamonixhttp://en.wikipedia.org/wiki/Petit_Druhttp://en.wikipedia.org/w/index.php?title=Abseiling&action=edit&section=3http://en.wikipedia.org/wiki/Ropehttp://en.wikipedia.org/wiki/Kernmantle_ropehttp://en.wikipedia.org/wiki/Nut_(climbing)http://en.wikipedia.org/wiki/Nut_(climbing)http://en.wikipedia.org/wiki/Hexcentrichttp://en.wikipedia.org/wiki/SLCDhttp://en.wikipedia.org/wiki/SLCDhttp://en.wikipedia.org/wiki/Abseiling#cite_note-2%23cite_note-2http://en.wikipedia.org/wiki/Climbing_equipment#Descenderhttp://en.wikipedia.org/wiki/Climbing_equipment#Descendershttp://en.wikipedia.org/wiki/Climbing_equipment#Descendershttp://en.wikipedia.org/wiki/Firefighterhttp://en.wikipedia.org/wiki/Munter_hitchhttp://en.wikipedia.org/wiki/Abseiling#cite_note-0%23cite_note-0http://en.wikipedia.org/wiki/Climbinghttp://en.wikipedia.org/wiki/Anglophonehttp://en.wikipedia.org/wiki/British_slanghttp://en.wikipedia.org/wiki/Israelhttp://en.wikipedia.org/wiki/Hindihttp://en.wikipedia.org/w/index.php?title=Abseiling&action=edit&section=2http://en.wikipedia.org/wiki/Abseiling#cite_note-1%23cite_note-1http://en.wikipedia.org/w/index.php?title=Jean_Est%C3%A9ril_Charlet&action=edit&redlink=1http://en.wikipedia.org/wiki/Chamonixhttp://en.wikipedia.org/wiki/Petit_Druhttp://en.wikipedia.org/w/index.php?title=Abseiling&action=edit&section=3http://en.wikipedia.org/wiki/Ropehttp://en.wikipedia.org/wiki/Kernmantle_ropehttp://en.wikipedia.org/wiki/Nut_(climbing)http://en.wikipedia.org/wiki/Hexcentrichttp://en.wikipedia.org/wiki/SLCDhttp://en.wikipedia.org/wiki/Abseiling#cite_note-2%23cite_note-2http://en.wikipedia.org/wiki/Climbing_equipment#Descenderhttp://en.wikipedia.org/wiki/Climbing_equipment#Descendershttp://en.wikipedia.org/wiki/Firefighterhttp://en.wikipedia.org/wiki/Munter_hitch
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    A climbing harness is often used around the waist to secure the descender. A

    comfortable climbing harness is important for descents that may take many

    hours.

    Aprusikmight be used as safety back-up.

    Helmets are worn to protect the head from bumps and falling rocks. A light

    source may be mounted on the helmet in order to keep the hands free in unlitareas.

    Glovesprotect hands from the rope and from hits with the wall. They are mainly

    used by recreational abseilers, industrial access practitioners, adventure racers

    and military as opposed to climbers or mountaineers. In fact, they can increase

    the risk of accident by becoming caught in the descenderin certain situations.[citation needed]

    Boots or other sturdy footwear with good grips.

    Knee-pads (and sometimes elbow-pads) are popular in some applications for the

    protection of joints during crawls or hits.

    [edit] Application

    Abseiling is used in a number of applications, including:

    Climbing, for returning to the base of a climb or to a point where one can try a

    new route.

    Recreational abseiling.

    Canyoning, where jumping waterfalls or cliffs may be too dangerous.

    Caving and Speleology, where undergroundpitches are accessed using this

    method (Single Rope Technique).

    Adventure racing, where events often include abseiling and other rope work. Industrial/Commercial applications, where abseiling techniques are used to

    access parts of structures or buildings so as to perform maintenance, cleaning or

    construction, e.g. steeplejacking, window cleaning, etc.)

    Access towildfires.

    Confined spaces access, such as investigating ballast tanks and other areas of

    ships.

    Rescue applications, such as accessing injured people or accident sites (vehicle

    or aircraft) and extracting the casualty using abseiling techniques.

    Window cleaning

    [edit] Safety and ecological issues

    Abseiling can be dangerous, and presents risks, especially to unsupervised or

    inexperienced abseilers. According to German mountaineerPit Schubert, about 25% of

    climbing deaths occur during rappelling, most commonly due to failing anchors.

    Another frequent cause of accidents is abseiling beyond the end of the rope.[4]

    Abseiling is prohibited or discouraged in some areas, due to the potential for

    environmental damage and/or conflict with climbers heading upwards, or the danger to

    people on the ground.

    http://en.wikipedia.org/wiki/Climbing_harnesshttp://en.wikipedia.org/wiki/Climbing_equipment#Descendershttp://en.wikipedia.org/wiki/Prusikhttp://en.wikipedia.org/wiki/Helmethttp://en.wikipedia.org/wiki/Glovehttp://en.wikipedia.org/wiki/Climbing_equipment#Rappel_devices_.28Descenders.29http://en.wikipedia.org/wiki/Wikipedia:Citation_neededhttp://en.wikipedia.org/wiki/Wikipedia:Citation_neededhttp://en.wikipedia.org/wiki/Bootshttp://en.wikipedia.org/wiki/Kneehttp://en.wikipedia.org/wiki/Elbow-jointhttp://en.wikipedia.org/w/index.php?title=Abseiling&action=edit&section=4http://en.wikipedia.org/wiki/Climbinghttp://en.wikipedia.org/wiki/Canyoninghttp://en.wikipedia.org/wiki/Cavinghttp://en.wikipedia.org/wiki/Speleologyhttp://en.wikipedia.org/wiki/Pitch_(vertical_space)http://en.wikipedia.org/wiki/Single_Rope_Techniquehttp://en.wikipedia.org/wiki/Adventure_racinghttp://en.wikipedia.org/wiki/Steeplejackhttp://en.wikipedia.org/wiki/Wildfirehttp://en.wikipedia.org/wiki/Wildfirehttp://en.wikipedia.org/wiki/Rescuehttp://en.wikipedia.org/w/index.php?title=Abseiling&action=edit&section=5http://en.wikipedia.org/w/index.php?title=Pit_Schubert&action=edit&redlink=1http://en.wikipedia.org/wiki/Abseiling#cite_note-3%23cite_note-3http://en.wikipedia.org/wiki/Climbing_harnesshttp://en.wikipedia.org/wiki/Climbing_equipment#Descendershttp://en.wikipedia.org/wiki/Prusikhttp://en.wikipedia.org/wiki/Helmethttp://en.wikipedia.org/wiki/Glovehttp://en.wikipedia.org/wiki/Climbing_equipment#Rappel_devices_.28Descenders.29http://en.wikipedia.org/wiki/Wikipedia:Citation_neededhttp://en.wikipedia.org/wiki/Bootshttp://en.wikipedia.org/wiki/Kneehttp://en.wikipedia.org/wiki/Elbow-jointhttp://en.wikipedia.org/w/index.php?title=Abseiling&action=edit&section=4http://en.wikipedia.org/wiki/Climbinghttp://en.wikipedia.org/wiki/Canyoninghttp://en.wikipedia.org/wiki/Cavinghttp://en.wikipedia.org/wiki/Speleologyhttp://en.wikipedia.org/wiki/Pitch_(vertical_space)http://en.wikipedia.org/wiki/Single_Rope_Techniquehttp://en.wikipedia.org/wiki/Adventure_racinghttp://en.wikipedia.org/wiki/Steeplejackhttp://en.wikipedia.org/wiki/Wildfirehttp://en.wikipedia.org/wiki/Rescuehttp://en.wikipedia.org/w/index.php?title=Abseiling&action=edit&section=5http://en.wikipedia.org/w/index.php?title=Pit_Schubert&action=edit&redlink=1http://en.wikipedia.org/wiki/Abseiling#cite_note-3%23cite_note-3
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    ROCK JUMPING

    Exactly a decade has passed since a man called Oxygen first hurled

    himself across Amerika. Known for his jumping ability, Oxygen, alanky Czech, catapulted to legend status by leaping a nearly 10-foot-

    wide abyss separating two 100-foot sandstone spires.

    Today, Petr Kops, 21, is wearing Oxygens hand-me-down pants.

    I did not know Oxygen personally, but my sister did, Kops said. I

    wear his trousers for good luck.

    Minutes later, Kops was standing at the edge of a 70-foot chasmcalled Broken Bones. He announced that he was about to damage his

    ankle. Then he jumped.

    While it may seem suicidal, leaping across a gaping crevasse is

    actually an extreme sport that is gaining in popularity.

    Called rock jumping, or simply jumping by the locals, this

    adrenaline-charged activity is taking place in the Adrspach-Teplice

    Rocks, a remote nature preserve in the northeast part of the CzechRepublic.

    Known for its roughly 11 square miles of phallic sandstone

    formations, the region has been a breeding ground for lifelong rock

    climbers, including Jaroslav Houser, 63, the purported conqueror of

    more than 1,000 sandstone spires.

    In their frenzy to subdue as many unclimbed tower tops as possible,

    seasoned climbers like Houser unwittingly gave rise to rock jumping

    in the Adrspach.

    The objective is to get to the top of as many towers as you can, said

    Vladimir Prochazka, known as June Bug, a 59-year-old climber and

    a collector of Czech rock climbing histories. You try to reach the

    hardest summit, sometimes by jumping.

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    Because jumping is often the most logical way to get to a descendible

    tower, almost every climber encounters a basic-level jump at one

    time or another, he said.

    In most cases, climbers jump with a rope tied around their waist.

    If they miss the landing which is not uncommon they plummet

    into the wall of the base tower.

    Jumping requires fearlessness, a fair amount of agility, and a high

    threshold for pain, Prochazka said. Broken ribs and damaged

    spines are fairly common.

    Still, there are those who prefer to spice up their experience byjumping without a rope. Among the most well known of these

    adventurers are Petr Prachtel and his wife, Zorka, who helped create

    the sport in the 1960s and 70s, a time rock jumpings early

    practitioners refer to as a golden age.

    After meeting in college, the inseparable climbing partners became

    legendary for their escapades on the tower tops of the Eesky raj

    nature preserve in the central Czech Republic. Here, they pioneeredcountless jumps, sometimes without the safety of a rope.

    Back then, there were several jumpers in on the scene, Prochazka

    said. This healthy competition helped the sport flourish.

    While many climbers jump out of necessity, few people specialize in

    the sport. In fact, some local climbers frown upon it.

    A few of the old-timers say that jumping has no place here,Prochazka said. But there is always some lunatic who goes crazy for

    it and becomes the dominant jumper in the region.

    For years, the alpha jumper title of the Adrspach and some say the

    world has belonged to Oxygen.

    By the time he arrived on the scene in the mid-1990s, local jumping

    aficionados had developed a grading system.

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    A Grade 1 jump is an easy crossover from one tower to the next, and

    may be executed by any reasonably skilled climber. As the grades

    rise, so do the required levels of precision. At Grade 4, the jump does

    not offer a flat landing surface, forcing the leaper to land monkey

    style, clutching the crevices of the opposite wall.

    Most of the popular jumps range from Grades 2 to 3, and few

    jumpers have successfully landed a Grade 4. Until Oxygen came.

    In 1997, Oxygen made history with Amerika the only Grade 5

    jump ever recorded.

    I dont know how he even made it to the other peak it seemed so

    far away, said Prochazka, who witnessed the event. Somehow, he

    managed to land on the crevice he picked out, but his body was

    leaned back, and it looked like he was in for a nasty fall. Then, he

    snatched a protruding pine tree, and a victorious war cry rang

    through the valley.

    Not long after his epic leap, Oxygen, whose name is Milan Zdvooily,

    disappeared from the Adrspach. He now is a gunsmith in London,

    and says he feels no need to replicate his jumps.

    I wonder if some crazy person will ever dare to make the jump, he

    said, referring to Amerika. People are always looking for something

    new, so maybe its possible.

    Indeed, contemporary jumping continues to attract individuals who

    appear to lack the self-preservation instinct. Seconds after predicting

    an ankle injury, Kops hollered a warrior cry and threw himself

    across the chasm.

    His sandaled feet landed on the opposite tower with a flat thud, and

    his ankle promptly swelled to twice its natural size. Kops could

    barely walk, but somehow this did not deter him from executing two

    more jumps.

    When the day was over, he nursed his injury with a half-liter of lager

    at the buffet near the entrance to the Adrspach rocks.

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    Kops attributed his affinity for jumping to camaraderie and

    adrenaline, and while he did not feel confident enough to try to

    match Oxygens leap, some of the old-timers suggested that the

    future of rock jumping depended on people like him.

    My prediction is that jumping will only live on thanks to a handful

    of individuals, Prochazka said. The only way this would change is if

    a new generation arrived on the scene. Their thirst for adrenaline

    could make it into a massive sport.

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    Kitesurfing

    Kitesurfing orkiteboarding is a surface water sport that uses wind power to pull a

    rider through the water on a small surfboard or a kiteboard (similar to a wakeboard).Generally kiteboarding refers to a style of riding known as freestyle or wake-style,

    whereas kitesurfing is more "wave-riding" oriented. These two styles usually require

    different boards and specific performance kites.

    A kitesurferorkiteboarderuses a board with or without foot-straps or bindings,

    combined with the power of a large controllable kite to propel the rider and the board

    across the water. In 2006, the number of kitesurfers has been estimated at around

    150,000 to 210,000, with 114,465 inflatable kites sold that same year.[1]

    The sport is becoming safer due to innovations in kite design, safety release systems,

    and instruction[citation needed]. Riding styles have evolved to suit riders and conditions, suchas wakestyle, waveriding, freestyle, jumping, and cruising.

    History

    The Chinese are credited with using kites for propulsion in the 13th century.[2]

    In the 1800sGeorge Pocock, used kites of increased size to propel carts on land and

    ships on the water, using a four-line control system - the same system in common use

    today. Both carts and boats were able to turn and sail upwind. The kites could be flown

    for sustained periods.

    [2]

    The intention was to establish kitepower as an alternative tohorsepower, partly to avoid the hated "horse tax" that was levied at that time. [3]In 1903,

    aviation pioneerSamuel Cody developed "man-lifting kites" and succeeded in crossing

    the English channel in a small collapsible canvas boat powered by a kite[4]

    In the late 1970s the development ofKevlarthen Spectra flying lines and more

    controllable kites with improved efficiency contributed to practical kite traction. In

    1978, Ian Day's "FlexiFoil" kite-powered Tornado catamaranexceeded 40 km/h.

    Through the 1980s there were occasionally successful attempts to combine kites with

    canoes, ice skates, snow skis,[5]water skis and roller skates.

    Throughout the 1970s and early 1980s Dieter Strasilla from Germany developed

    parachute-skiing and later perfected a kiteskiing system using self made paragliders and

    a ball-socket swivel allowing the pilot to kitesail upwind and uphill but also to take off

    into the air at will[6]. Strasilla and his friend Andrea Kuhn/Switzerland used this

    invention also in combination with surfboards and Skurfs, grasskies and selfmade

    buggies. One of his patents describes in 1979 the first use of an inflatable kite design for

    kitesurfing[7].

    Two brothers, Bruno Legaignoux and Dominique Legaignoux, from the Atlantic coast

    of France, developed kites for kitesurfing in the late 1970s and early 1980s and patented

    an inflatable kite design in November 1984, a design that has been used by companiesto develop their own products.

    http://en.wikipedia.org/wiki/Surface_water_sporthttp://en.wikipedia.org/wiki/Surfboardhttp://en.wikipedia.org/wiki/Wakeboardhttp://en.wikipedia.org/wiki/Kitesurfing#cite_note-0%23cite_note-0http://en.wikipedia.org/wiki/Wikipedia:Citation_neededhttp://en.wikipedia.org/wiki/Wikipedia:Citation_neededhttp://en.wikipedia.org/wiki/Kitesurfing#cite_note-Jelling-1%23cite_note-Jelling-1http://en.wikipedia.org/wiki/George_Pocock_(inventor)http://en.wikipedia.org/wiki/George_Pocock_(inventor)http://en.wikipedia.org/wiki/Kitesurfing#cite_note-Jelling-1%23cite_note-Jelling-1http://en.wikipedia.org/wiki/Kitesurfing#cite_note-Jelling-1%23cite_note-Jelling-1http://en.wikipedia.org/wiki/Kitesurfing#cite_note-Lynn1-2%23cite_note-Lynn1-2http://en.wikipedia.org/wiki/Kitesurfing#cite_note-Lynn1-2%23cite_note-Lynn1-2http://en.wikipedia.org/wiki/Samuel_Codyhttp://en.wikipedia.org/wiki/Man-lifting_kitehttp://en.wikipedia.org/wiki/English_channelhttp://en.wikipedia.org/wiki/Kitesurfing#cite_note-3%23cite_note-3http://en.wikipedia.org/wiki/Kevlarhttp://en.wikipedia.org/wiki/Kevlarhttp://en.wikipedia.org/wiki/Dyneemahttp://en.wikipedia.org/wiki/Catamaranhttp://en.wikipedia.org/wiki/Catamaranhttp://en.wikipedia.org/wiki/Ice_skateshttp://en.wikipedia.org/wiki/Kitesurfing#cite_note-Harris1-4%23cite_note-Harris1-4http://en.wikipedia.org/wiki/Water_skihttp://en.wikipedia.org/wiki/Roller_skateshttp://en.wikipedia.org/wiki/Kitesurfing#cite_note-5%23cite_note-5http://en.wikipedia.org/wiki/Kitesurfing#cite_note-6%23cite_note-6http://en.wikipedia.org/wiki/Kitesurfing#cite_note-6%23cite_note-6http://en.wikipedia.org/wiki/Surface_water_sporthttp://en.wikipedia.org/wiki/Surfboardhttp://en.wikipedia.org/wiki/Wakeboardhttp://en.wikipedia.org/wiki/Kitesurfing#cite_note-0%23cite_note-0http://en.wikipedia.org/wiki/Wikipedia:Citation_neededhttp://en.wikipedia.org/wiki/Kitesurfing#cite_note-Jelling-1%23cite_note-Jelling-1http://en.wikipedia.org/wiki/George_Pocock_(inventor)http://en.wikipedia.org/wiki/Kitesurfing#cite_note-Jelling-1%23cite_note-Jelling-1http://en.wikipedia.org/wiki/Kitesurfing#cite_note-Lynn1-2%23cite_note-Lynn1-2http://en.wikipedia.org/wiki/Samuel_Codyhttp://en.wikipedia.org/wiki/Man-lifting_kitehttp://en.wikipedia.org/wiki/English_channelhttp://en.wikipedia.org/wiki/Kitesurfing#cite_note-3%23cite_note-3http://en.wikipedia.org/wiki/Kevlarhttp://en.wikipedia.org/wiki/Dyneemahttp://en.wikipedia.org/wiki/Catamaranhttp://en.wikipedia.org/wiki/Ice_skateshttp://en.wikipedia.org/wiki/Kitesurfing#cite_note-Harris1-4%23cite_note-Harris1-4http://en.wikipedia.org/wiki/Water_skihttp://en.wikipedia.org/wiki/Roller_skateshttp://en.wikipedia.org/wiki/Kitesurfing#cite_note-5%23cite_note-5http://en.wikipedia.org/wiki/Kitesurfing#cite_note-6%23cite_note-6
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    In 1990, practicalkite buggying was pioneered by Peter Lynn at Argyle Park in

    Ashburton, New Zealand. Lynn coupled a three-wheeled buggy with a forerunner of the

    modernparafoil kite. Kite buggying proved to be very popular worldwide, with over

    14,000 buggies sold up to 1999.

    The development of modern day kitesurfing by the Roeselers in the USA and theLegaignoux in France carried on in parallel to buggying. Bill Roeseler, a Boeing

    aerodynamicist, and his son Corey Roeseler patented the "KiteSki" system which

    consisted of water skis powered by a two line delta style kite controlled via a bar

    mounted combined winch/brake. The KiteSki was commercially available in 1994. The

    kite had a rudimentary water launch capability and could go upwind. In 1995, Corey

    Roeseler visited Peter Lynn at New Zealand's Lake Clearwater in the Ashburton Alpine

    Lakes area, demonstrating speed, balance and upwind angle on his 'ski'. In the late

    1990s, Corey's ski evolved to a single board similar to a surfboard.[3]

    In 1996 Laird Hamilton and Manu Bertin were instrumental in demonstrating and

    popularising kitesurfing off the Hawaiian coast ofMaui.

    In 1997 the Legaignoux brothers developed and sold the breakthrough "Wipika" kite

    design which had a structure of preformed inflatable tubes and a simple bridle system to

    the wingtips, both of which greatly assisted water re-launch. Bruno Legaignoux has

    continued to improve kite designs, including developing thebow kite design, which has

    been licensed to many kite manufacturers.

    In 1997, specialist kiteboards were developed by Raphal Salles and Laurent Ness. By

    1998 kitesurfing had become a mainstream sport, and several schools were teaching

    kitesurfing. The first competition was held on Maui in September 1998 and won by

    Flash Austin.[3]

    By 1999 single direction boards derived from windsurfing and surfing designs became

    the dominant form of kiteboard. From 2001 onwards, wakeboard style bi-directional

    boards became more popular.

    On September 18th 2008, during the "Luderitz Speed Challenge"[8] inNamibia,

    kitesurfing became the fastest way of sailing on water. The "World Sailing Speed

    Record Council"[9] (WSSRC) validated the run of Robert Douglas from the USA at

    49.84 knots (92.30kmph). A few days later on October 3rd, 2008, Sebastien Cattelan

    from France was the first to pass 50 knots kitesurfing. His attempt was validated by theWSSRC at 50.26 knots (93.08kmph). The following day, on October 4th 2008, Alex

    Caizergues from France established a record validated by the WSSRC at 50.57 knots

    (93.66kmph). This kitesurfing speed record is the absolute sailing speed record on water

    by any craft.

    [edit] Techniques

    [edit] Kitesurfing basics

    Kiteboarding can pose hazards to kitesurfers, beachgoers, bystanders and others on the

    water. Many problems and dangers that may be encountered while learning kiting canbe avoided or minimized by taking professional instruction through lesson centres. [10]

    http://en.wikipedia.org/wiki/Kite_buggyhttp://en.wikipedia.org/wiki/Kite_buggyhttp://en.wikipedia.org/wiki/Peter_Lynnhttp://en.wikipedia.org/wiki/Ashburton,_New_Zealandhttp://en.wikipedia.org/wiki/Parafoilhttp://en.wikipedia.org/wiki/Boeinghttp://en.wikipedia.org/wiki/Aerodynamicisthttp://en.wikipedia.org/wiki/Kitesurfing#cite_note-Lynn1-2%23cite_note-Lynn1-2http://en.wikipedia.org/wiki/Kitesurfing#cite_note-Lynn1-2%23cite_note-Lynn1-2http://en.wikipedia.org/wiki/Laird_Hamiltonhttp://en.wikipedia.org/wiki/Manu_Bertinhttp://en.wikipedia.org/wiki/Hawaiihttp://en.wikipedia.org/wiki/Mauihttp://en.wikipedia.org/wiki/Mauihttp://en.wikipedia.org/wiki/Bow_kitehttp://en.wikipedia.org/wiki/Mauihttp://en.wikipedia.org/wiki/Kitesurfing#cite_note-Lynn1-2%23cite_note-Lynn1-2http://en.wikipedia.org/wiki/Kitesurfing#cite_note-7%23cite_note-7http://en.wikipedia.org/wiki/Namibiahttp://en.wikipedia.org/wiki/World_Sailing_Speed_Record_Councilhttp://en.wikipedia.org/wiki/World_Sailing_Speed_Record_Councilhttp://en.wikipedia.org/wiki/Kitesurfing#cite_note-8%23cite_note-8http://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=2http://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=3http://en.wikipedia.org/wiki/Kitesurfing#cite_note-9%23cite_note-9http://en.wikipedia.org/wiki/Kite_buggyhttp://en.wikipedia.org/wiki/Peter_Lynnhttp://en.wikipedia.org/wiki/Ashburton,_New_Zealandhttp://en.wikipedia.org/wiki/Parafoilhttp://en.wikipedia.org/wiki/Boeinghttp://en.wikipedia.org/wiki/Aerodynamicisthttp://en.wikipedia.org/wiki/Kitesurfing#cite_note-Lynn1-2%23cite_note-Lynn1-2http://en.wikipedia.org/wiki/Laird_Hamiltonhttp://en.wikipedia.org/wiki/Manu_Bertinhttp://en.wikipedia.org/wiki/Hawaiihttp://en.wikipedia.org/wiki/Mauihttp://en.wikipedia.org/wiki/Bow_kitehttp://en.wikipedia.org/wiki/Mauihttp://en.wikipedia.org/wiki/Kitesurfing#cite_note-Lynn1-2%23cite_note-Lynn1-2http://en.wikipedia.org/wiki/Kitesurfing#cite_note-7%23cite_note-7http://en.wikipedia.org/wiki/Namibiahttp://en.wikipedia.org/wiki/World_Sailing_Speed_Record_Councilhttp://en.wikipedia.org/wiki/World_Sailing_Speed_Record_Councilhttp://en.wikipedia.org/wiki/Kitesurfing#cite_note-8%23cite_note-8http://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=2http://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=3http://en.wikipedia.org/wiki/Kitesurfing#cite_note-9%23cite_note-9
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    Kitesurfing schools provide courses and lessons to teach skills including kite launching,

    flying, landing, usage of the bar, lines and safety devices.

    A kiteboarder at Lake Vernon, Ontario

    Kitesurfers at Slufter beach on theMaasvlakte in Rotterdam

    [edit] Turning

    A beginner can turn by putting the kite up into neutral, stopping, sinking backwards into

    the water, then turning the kite in the opposite direction and starting again. A heel turn

    jibe is a quicker, more skillful turn that is executed by slowing down, flattening the

    board, then reversing the board flat on the water by bringing the rear foot around

    downwind to eventually become the new leading foot. The direction of the kite is then

    reversed, which swings the surfer's path in a half circle, centered on the kite. As the turn

    ends, the kite is flown over to be in front of the surfer again. [11] Turns away from the

    wind steal lift.

    A poorly executed turn will "fly" the surfer, and is often followed by a tumble if the

    surfer can't put the board down at the right angle. It is important to use safety equipment

    like a deadman system where the kite lines can be detached from the surfer's harness

    quickly because the kite can power up after tumbles and pull the rider under water or

    against objects at uncontrollable speeds. Safety knives are a must to quickly cut lines in

    the event of entanglements. After a tumble, detangling and re-launching the kite can be

    difficult.

    If the kite is only turned partially, or is not straightened at the right rate, a turning surfercan swing up and be dragged into the air by the kite, then get hurt when he recontacts

    the surface. Even in water, flying a power kite can be a brutal contact sport. The kite

    can rise 20 to 30 meters (65 to 100 ft) in the air, and a careless turn in high winds can

    easily swing the rider five meters (28 feet) into the air and down to an uncontrolled

    impact.

    [edit] Controlled flying and jumping

    Jumping

    Controlled flying is possible and one of the biggest attractions of the sport, but more

    difficult and dangerous. Flying occurs when the momentum of the surfer pulls the kite.

    Before jumping, the surfer builds up as much tension as possible by accelerating and

    strongly edging the board. Then in controlled, straight flight, the kite is flown quickly

    (snapped) to an overhead position, usually just as the surfer goes over a wave. The kite

    must then be quickly turned to glide in the direction of motion, usually into the wind. A

    large variety of maneuvers can be performed while jumping such as rotations, taking the

    board off the feet etc.

    Jumping has risks and as such riders need to choose locations with suitably sized

    downwind clear areas usually referred to as the downwind buffer zone. Litigation has

    http://en.wikipedia.org/wiki/Maasvlaktehttp://en.wikipedia.org/wiki/Maasvlaktehttp://en.wikipedia.org/wiki/Rotterdamhttp://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=4http://en.wikipedia.org/wiki/Kitesurfing#cite_note-10%23cite_note-10http://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=5http://en.wikipedia.org/wiki/File:Kitesurf_jump_aerial.jpghttp://en.wikipedia.org/wiki/File:Slufter_beach.jpghttp://en.wikipedia.org/wiki/File:Kitebaording.jpghttp://en.wikipedia.org/wiki/Maasvlaktehttp://en.wikipedia.org/wiki/Rotterdamhttp://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=4http://en.wikipedia.org/wiki/Kitesurfing#cite_note-10%23cite_note-10http://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=5
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    come about due to riders not exercising due care when jumping and placing the public

    at risk or themselves should they land on hard objects.

    [edit] Board grabs

    Board grabs names

    Board grabs are tricks performed while a rider is jumping or has gained air from

    popping by grabbing the board in a number of positions with either hand. Each grab has

    a different name dependent on which part of the board is grabbed and with which hand

    it is grabbed by. Rear hand grabs are known as Crail,Indy, Trindy, Tail, Tailfish, and

    Stalefish; while front hand grabs are known as Slob, Mute, Seatbelt, Melon,Lien, and

    Nose. Names originate from other board sports like skateboardingand snowboarding,

    such as Tindy and Tailfish.

    A number of grabs can also be combined into one trick. A rider may perform a tail grab

    going to indy by moving the rear hand from the back of the board to the middle of thetoe side edge.

    [edit] Assessing the wind

    [edit] Wind strength and kite sizes

    Kitesurfers change kite size and/or line length from the harness to the kite depending on

    wind strength -- stronger winds call for a smaller kite to prevent overpower situations. It

    is important to avoid using too large a kite, particularly when the surfer is new to the

    sport.

    Kites come in different aspect ratios (AR). The AR refers to how much of the kite is

    exposed to the wind and what angle the wind takes as it passes through the kite. Newer

    kites also provide a "depower" option to reduce the power in the kite. By using

    depower, the kite's angle of attack to the wind is reduced, thereby catching less wind in

    the kite and reducing the power or pull.

    The more optimal these factors, the lower wind speed that can be performed in. A 170

    lb. rider will need about 8 to 10knots sustained wind and a larger kite (16 m or bigger).

    In 12 - 15 knots fun can be head by doing low jumps and freestyle maneuvers. 16 - 20

    knots on a 16 square meter kite will allow jumping high, while 20 to 24 knots will alloweven high jumps on a 12 square meter kite. An experienced rider generally carries a

    'quiver' of different sized kites appropriate for the wind speed range. A typical kite

    quiver might include 9 m, 13 m and 18 m traditional "C-kites". Exact kite sizes will

    vary depending on rider weight and desired wind ranges.

    Bow kites have a wider wind range than C-kites, so two kite sizes (such 7 m and 12 m)

    could form an effective quiver for winds ranging from 10 to 30+ knots for a 75 kg (165

    lbs) rider[citation needed].

    [edit] Wind direction

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    It is generally held that kitesurfers should never venture onto the water in direct

    offshore winds (because of the possibility of being 'flown' out to sea) or direct onshore

    winds (because of the possibility of being thrown against beach objects, trees, rocks

    etc). There are two exceptions to riding in offshore winds - if someone with the surfer

    has a boat for assistance back to shore, or on inland lakes where the far shore will be

    reached eventually. Cross-shore wind directions are widely considered to be the best.Offshore winds are also generally gusty and much more difficult in which to kitesurf.

    [edit] Locations

    Main article: Kitesurfing locations

    Kitesurfing inNoordwijkin the Netherlands

    Kiteurfer on the Columbia River

    Kitesurfers wearing dry suits on Long Island in winter when the air and water

    temperatures are near 0 C (32 F)

    Kitesurfing at Punta Paloma Beach, Tarifa, Spain

    Any locale with consistent, steady side-onshore winds (10 to 35+ knots), large open

    bodies of water and good launch areas are suitable for kitesurfing. Most kitesurfing

    takes place along ocean shores, usually off beaches, but it can also be practiced on large

    lakes and inlets and occasionally on rivers. Since kiteboarding relies heavily on

    favorable, consistent wind conditions, certain locations tend to become popular and

    sought out by kiteboarders.

    [edit] Restrictions

    Kite surfing is restricted or banned in some locations[citation needed]

    . This is generally theresult of safety and liability concerns, excessive general beach traffic and poorly

    organized practicing of kiteboarding. Bans have been reversed when kitesurfers have

    organized, prepared riding guidelines and negotiated with authorities for resumption of

    this sport[citation needed]. The primary reason why many experienced kite boarders stress

    safety and adequate quality professional instruction is to keep their sport from being

    banned or unduly restricted at their favourite location [citation needed]. As the sport has

    progressed the governing bodies have become a lot more involved in the sport,

    managing the schools and keeping the teaching practices up to date.

    [edit] Equipment

    To kitesurf, some basic gear is needed:

    [edit] Power kites

    Apower kite is available in two major forms: leading edge inflatables and foil kites.

    [edit] Leading edge inflatables

    Leading edge inflatable kites, known also as inflatables, LEI kites orC-kites, are

    typically made from ripstop nylon with an inflatable plastic bladder that spans acrossthe front edge of the kite with separate smaller bladders that are perpendicular to the

    http://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=10http://en.wikipedia.org/wiki/Kitesurfing_locationshttp://en.wikipedia.org/wiki/Noordwijkhttp://en.wikipedia.org/wiki/Columbia_Riverhttp://en.wikipedia.org/wiki/Dry_suithttp://en.wikipedia.org/wiki/Long_Islandhttp://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=11http://en.wikipedia.org/wiki/Wikipedia:Citation_neededhttp://en.wikipedia.org/wiki/Wikipedia:Citation_neededhttp://en.wikipedia.org/wiki/Wikipedia:Citation_neededhttp://en.wikipedia.org/wiki/Wikipedia:Citation_neededhttp://en.wikipedia.org/wiki/Wikipedia:Citation_neededhttp://en.wikipedia.org/wiki/Wikipedia:Citation_neededhttp://en.wikipedia.org/wiki/Wikipedia:Citation_neededhttp://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=12http://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=13http://en.wikipedia.org/wiki/Power_kitehttp://en.wikipedia.org/wiki/Leading_edge_inflatable_kitehttp://en.wikipedia.org/wiki/Foil_kitehttp://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=14http://en.wikipedia.org/wiki/Leading_edge_inflatable_kitehttp://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=10http://en.wikipedia.org/wiki/Kitesurfing_locationshttp://en.wikipedia.org/wiki/Noordwijkhttp://en.wikipedia.org/wiki/Columbia_Riverhttp://en.wikipedia.org/wiki/Dry_suithttp://en.wikipedia.org/wiki/Long_Islandhttp://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=11http://en.wikipedia.org/wiki/Wikipedia:Citation_neededhttp://en.wikipedia.org/wiki/Wikipedia:Citation_neededhttp://en.wikipedia.org/wiki/Wikipedia:Citation_neededhttp://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=12http://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=13http://en.wikipedia.org/wiki/Power_kitehttp://en.wikipedia.org/wiki/Leading_edge_inflatable_kitehttp://en.wikipedia.org/wiki/Foil_kitehttp://en.wikipedia.org/w/index.php?title=Kitesurfing&action=edit&section=14http://en.wikipedia.org/wiki/Leading_edge_inflatable_kite
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    main bladder to form the chord or foil of the kite. The inflated bladders give the kite its

    shape and also keep the kite floating once dropped in the water. LEIs are the most

    popular choice among most kitesurfers thanks to their quicker and more direct response

    to the rider's inputs, easy relaunchability once crashed into the water, and resilient

    nature. If an LEI kite hits the water/ground too hard or is subjected on water to

    substantial wave activity, bladders can burst or it can be torn apart.

    In 2005 Bow kites (also known as flat LEI kites) were developed with features

    including a concave trailing edge, a shallower arc in planform, and frequently a bridle

    along the leading edge. These features allow the kite's angle of attack to be altered more

    and thus adjust the amount and range of power being generated to a much greater

    degree than previous LEIs. These kites can be fully depowered, which is a significant

    safety feature. They can also cover a wider wind range than a comparable C-shaped

    kite. The ability to adjust the angle of attack also makes them easier to re-launch when

    lying front first on the water. Bow kites are popular with riders from beginner to

    advanced levels. Most LEI kite manufacturers developed a variation of thebow kite by

    2006.

    Early bow kites had some disadvantages compared to classic LEI kites:

    They can become inverted and then not fly properly

    They can be twitchy and not as stable

    Heavier bar pressure makes them more tiring to fly

    Lack of "sled boosting" effect when jumping[12]

    In 2006 second generation flat LEI kites were developed which combine near total

    depower and easy, safe relaunch with higher performance, no performance penalties and

    reduced bar pressure. Called Hybrid or SLE kites (Supported Leading Edge), these

    kites are suitable for both beginners and experts.

    For 2009 the performance revolution shows no sign of slowing. Bridled designs feel

    more like C kites, and five-line hybrids have better depower capability than ever before.[13] There are more than thirty companies manufacturing Leading edge inflatable kites.

    The ten most popular kitefactories are Best, Cabrinha, Core, F.One, Flysurfer, JN,

    Liquid Force,Naish, North and Slingshot. The delta-kites are growing in popularity

    since 2008 with around 12 companies offering delta-kites since 2008/2009.

    [edit] Foil kites

    Foil kites are also mostly fabric (ripstop nylon) with air pockets (air cells) to provide it

    with lift and a fixed bridle to maintain the kite's arc-shape, similar to a paraglider. A

    depowerable foil kite can cover about the same wind range as two traditional C-shape

    LEI kite sizes, so the rider can use a smaller kite, giving a wider depower range,

    although the new LEI "bow" kites have a comparable wide range. Foil kites have the

    advantage of not needing to have bladders manually inflated, a process which, with an

    LEI, can take up to ten minutes. Foil kites are designed with either an open or closed

    cell configuration.

    [edit] Open Cell

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    Open cell foils rely on a constant airflow against the inlet valves to stay inflated, but are

    generally impossible to relaunch if they hit the water, since they have no means of

    avoiding deflation, and quickly become soaked.

    [edit] Closed Cell

    Closed cell foils are almost identical to open cell foils except they are equipped with

    inlet valves to hold air in the chambers, thus keeping the kite inflated (or, at least,

    making the deflation extremely slow) even once in the water. Water relaunches with

    closed cell foil kites are simpler; a steady tug on the power lines typically allows them

    to take off again. An example for a closed cell kite is theArc Kite.

    [edit] Kite sizes

    Kites come in sizes ranging from 0.7 square meters to 21 square meters, or even larger.

    In general, the larger the surface area, the more power the kite has, although kite power

    is also directly linked to speed, and smaller kites can be flown faster; a tapering curve

    results, where going to a larger kite to reach lower wind ranges becomes futile at a wind

    speed of around eight knots. Kites come in a variety of designs. Some kites are more

    rectangular in shape; others have more tapered ends; each design determines the kites

    flying characteristics. 'Aspect ratio' is the ratio of span to length. Wider shorter (ribbon-

    like) kites have less drag because the wing-tip vortices are smaller. High aspect ratios

    (ribbon-like kites) develop more power in lower wind speeds.

    Seasoned kiteboarders will likely have three or more kite sizes which are needed to

    accommodate various wind levels, although bow kites may change this, as they present

    an enormous wind range; some advanced kiters use only one bow kite. Smaller kites areused by light riders, or in strong wind conditions; larger kites are used by heavier riders

    or in light wind conditions. Larger and smaller kiteboards have the same effect: with

    more available power a given rider can ride a smaller board. In general, however, most

    kiteboarders only need one board and one to three kites (7-12m in size).

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    Riverboarding

    A riverboarder floats down the Kern Riverat about 4,000 cfs

    Riverboarding is theNorth American name for aboardsport in which the participant is

    prone on the board with fins on his/her feet for propulsion and steering. This sport is

    also known as hydrospeed in Europe and white-water sledging inNew Zealand. [1]

    Riverboarding includes recreational and the swiftwater rescuepractice of using a high-

    flotation riverboard, designed for buoyancy in highly aerated water.

    [edit] Origins

    Riverboarding is believed to have originated in the late 1970s. It is claimed to have

    originated in France, when raft guides stuffed a burlap mail sack with life vests andwent down rapids.[2] Soon, riders adapted a personal submarine shell for their molds and

    the plastic version of the riverboard was born. Sometime in the late 1980s, Carlson

    began running rivers in California using an oceanbodyboard and ended up making his

    own board that was bigger, thicker and had handles.

    European riders also developed a foam version (called a hydrospeed ) of the plastic

    board to reduce weight and avoid injuring each other during collisions that sometimes

    resulted from one rider travelling downstream and another facing upstream while

    surfing a hydraulic. Today, homemade foam hydrospeeds are found primarily among

    European riders. A growing sport in North America, riverboarding has grown in

    popularity from media exposure and the emergence of commercial operators runningriverboard trips.

    [edit] Equipment

    Riverboarders typically wear fins to provide the thrust to navigate in river currents,

    while a personal flotation device provides additional buoyancy.Wetsuits,gloves,

    booties, helmets, andknee pads are worn as protection from the cold and from rocks.

    Additionally, shin guards, and thigh and elbow padsare sometimes worn for extra

    protection on shallow rivers. Instruction, board design, and gear continue to improve,

    making riverboarding safer, and opening up the possibilities of rapids that can be run ona riverboard and new tricks that can be performed while surfing.

    [edit] Rescue use

    In rescue use, the board is used to support both rescuer and victim in the water during

    rescue. The rider must engage both mind and body -- thinking about the best way to go

    down a river while using their fins for the propulsion to get out of harm's way.

    Riverboards can offer rescuers a valuable chase option to access victims swept

    downstream who may not be accessed by hand or rope.

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    [edit] Rivers

    Several companies run sledging excursions inNew Zealand nearQueenstown,Wanaka,

    andRotorua. Several companies also operate guided riverboard trips in the United states

    near Missoula, Montana, Sacramento, California and Bend, Oregon.

    [edit] Records

    Mike Horn currently holds the record for the tallest waterfall riverboarded with his

    descent of a 22 meter (72 ft) tall waterfall on the upper reaches of the Pacuare Riverin

    Costa Rica.[citation needed]

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    Rafting

    From Wikipedia, the free encyclopedia

    Rafting inBrazil

    Rafting in Ljusselforsen, Krokugforsen, Pite river, LapplandSweden.

    Rafting on the Arkansas River, Colorado, USA

    Rafting inLadakh,India

    Rafting orwhitewater rafting is a challenging recreational activity using an inflatable

    raft to navigate a riveror other bodies of water. This is usually done onwhitewateror

    different degrees of rough water, in order to thrill and excite the raft passengers. The

    development of this activity as a leisure sport has become popular since the mid-1970s.

    [edit] Whitewater rafts

    The modern raft is an inflatable boat, consisting of very durable, multi-layered

    rubberized or vinyl fabrics with several independent air chambers. The length varies

    between 3.5 m (11 ft) and 6 m (20 ft), the width between 1.8 m (6 ft) and 2.5 m (8 ft).

    The exception to this size rule is usually thepackraft, which is designed as a portable

    single-person raft and may be as small as 1.5 metres (4.9 ft) long and weigh as little as

    4 pounds (1.8 kg).

    Rafts come in a few different forms. In Europe, the most common is the symmetrical

    raft steered with a paddle at the stern. Other types are the asymmetrical, rudder-

    controlled raft and the symmetrical raft with central helm (oars). Rafts are usually

    propelled with ordinarypaddles and typically hold 4 to 12 persons. In Russia, rafts are

    often hand made and are often a catamaran style with two inflatable tubes attached to a

    frame. Pairs of paddlers navigate on these rafts. Catamaranstyle rafts have become

    popular in the western United States as well, but are typically rowed instead of paddled.

    [edit] Classes of whitewater

    Main article: International Scale of River Difficulty

    Grade 1: Very small rough areas, requires might require slight maneuvering. (Skill

    Level: Very Basic)

    Grade 2: Some rough water, maybe some rocks, might require some maneuvering.

    (Skill Level: Basic Paddling Skill)

    Grade 3: Whitewater, small waves, maybe a small drop, but no considerable danger.

    May require significant maneuvering.(Skill Level: Experienced paddling skills)

    Grade 4: Whitewater, medium waves, maybe rocks, maybe a considerable drop, sharp

    maneuvers may be needed. (Skill Level: Whitewater Experience)

    Grade 5: Whitewater, large waves, possibility of large rocks and hazards, possibility of

    a large drop, requires precise maneuvering (Skill Level: Advanced WhitewaterExperience)

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    Grade 6: Class 6 rapids are considered to be so dangerous as to be effectively

    unnavigable on a reliably safe basis. Rafters can expect to encounter substantial

    whitewater, huge waves, huge rocks and hazards, and/or substantial drops that will

    impart severe impacts beyond the structural capacities and impact ratings of almost all

    rafting equipment. Traversing a Class 6 rapid has a dramatically increased likelihood of

    ending in serious injury or death compared to lesser classes. (Skill Level: Successfulcompletion of a Class 6 rapid without serious injury or death is widely considered to be

    a matter of great luck or extreme skill)

    [edit] Techniques

    Rafts in whitewater are very different vehicles than canoes or kayaks and have their

    own specific techniques to maneuver through whitewater obstacles.

    Punching - Rafts carry great momentum, and on rivers hydraulics that are

    dodged by canoes and kayaks are often punched by rafts. This involves the

    rafting crew paddling the raft to give it enough speed to push through the

    hydraulic without getting stopped.

    High Siding - If a raft is caught in a hydraulic it will often quickly go sideways.

    In order to stop the raft flipping on its inside edge, the rafters can climb to the

    side of the raft furthest downstream, which will also be the side of the raft

    highest in the air leading to its name. In this position the rafters may be able to

    use the draw stroke to pull the raft out of the hydraulic.

    [edit] Capsizing

    Dump Truck- Rafts are inherently stable crafts because of their size and oftenthey will shed gear and passengers before they actually capsize. In the industry

    if a raft dumps some or all of its passengers but remains upright, it is said to

    have dump trucked.

    Left Over Right orRight over Left - Rafts almost always flip side over side. If

    the left tube rises over the right tube, the raft is said to have flipped left over

    right and vice versa.

    Taco - If a raft is soft, or underinflated, it may taco, or reverse taco. Rafts are

    said to have tacoed if the middle of the raft buckles and the front of the raft

    touches or nearly touches the back of the raft. This often is a result ofsurfing in

    a hydraulic. A reverse taco is when the nose, or stern of the raft is pulled down

    under water and buckles to touch the middle or back, or nose of the raft. End over End - Occasionally rafts will flip end over end. This is usually after

    the raft has dump trucked to lighten the load, allowing the water to overcome the

    weight of the boat flipping it vertically before it lands upside down. Rafts will

    usually taco and turn sideways, making an end-over-end flip a very rare flip in

    most rafts.

    [edit] Re-righting

    Flip Line - The flip line technique is the most used in commercial rafting where

    flips are common. The guide will take a loop of webbing that has a carabineron

    it and attach it to the perimeter line on the raft, Standing on top of the upside

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    down raft they will hold the line and lean to the opposite side from where the

    flip line is attached, re-righting the raft.

    Knee Flipping - Capsized rafts that are small enough with little or no gear

    attached can be knee flipped. This involves the rafter holding the webbing on the

    underside of the raft, and pushing their knees into the outer tube, and then lifting

    their body out of the water, leaning back to overturn the raft. T rescue - Much like the kayak technique some rafts are large enough that they

    need to be overturned with the assistance of another raft or land. Positioning the

    upturned raft or land at the side of the raft the rafters can then re-right the raft by

    lifting up on the perimeter line.

    [edit] Tricks

    Rock Splats If the rafters load the back of the raft, they can paddle the raft into

    a rock on the river, having it hit the bottom of the boat instead of the nose; if

    done correctly this can raise the raft up vertically on its stern.

    Surfing Commercial Rafts often use waves on rivers to surf. Nose Dunks Large rafts can enter hydraulics called holes from downstream and

    submerge their nose, or reverse taco. This can be a safe way to get rafters wet in

    a hydraulic.

    [edit] Safety

    Packrafting in Alaska, USA

    Whitewater rafting can be a dangerous sport, especially if basic safety precautions arenot observed. Both commercial and private trips have seen their share of injuries and

    fatalities, though private travel has typically been associated with greater risk[citation needed].

    Depending on the area, legislated safety measures may exist for rafting operators. These

    range from certification of outfitters, rafts, and raft leaders, to more stringent regulations

    about equipment and procedures. It is generally advisable to discuss safety measures

    with a rafting operator before signing on for a trip. The equipment used and the

    qualifications of the company and raft guides are essential information to be considered.

    Like most outdoor sports, rafting in general has become safer over the years. Expertise

    in the sport has increased, and equipment has become more specialized and increased in

    quality. As a result the difficulty rating of most river runs has changed. A classicexample would be the Colorado Riverin the Grand Canyonor Jalcomulco River in

    Mexico, which has swallowed whole expeditions in the past, leaving only fragments of

    boats. In contrast, it is now run safely by commercial outfitters hundreds of times each

    year with relatively untrained passengers. [1]

    Risks in whitewater rafting stem from both environmental dangers and from improper

    behavior. Certain features on rivers are inherently unsafe and have remained

    consistently so despite the passage of time. These would include "keeper hydraulics",

    "strainers" (e.g. fallen trees), dams (especially low-head dams, which tend to produce

    river-wide keeper hydraulics), undercut rocks, and of course dangerously high

    waterfalls. Rafting with experienced guides is the safest way to avoid such features.Even in safe areas, however, moving water can always present riskssuch as when a

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    swimmer attempts to stand up on a rocky riverbed in strong current, risking foot

    entrapment. Irresponsible behavior related to rafting while intoxicated has also

    contributed to many accidents.

    To combat the illusion that rafting is akin to an amusement park ride, and to underscore

    the personal responsibility each rafter faces on a trip, rafting outfitters generally requirecustomers to sign waiver forms indicating understanding and acceptance of potential

    serious risks. Rafting trips often begin with safety presentations to educate customers

    about problems that may arise.

    White water rafting is often played for the adrenaline rush and this often becomes a

    problem for people and their own safety. White water rafting accidents have occurred

    but are not common.

    Due to this the overall risk level on a rafting trip with experienced guides using proper

    precautions is low.[citation needed] Thousands of people safely enjoy raft trips every year.

    [edit] Environmental issues

    Rafting inMontenegro

    Like all wilderness activities, rafting must balance its use of nature with the

    conservation of rivers as a natural resource and habitat. Because of these issues, some

    rivers now have regulations restricting the annual and daily operating times or numbers

    of rafters.

    Conflicts have arisen when rafting operators, often in co-operation with municipalities

    andtourism associations, alter the riverbed by dredging and/orblastingin order to

    eliminate safety hazards or create more interesting whitewater features in the river.

    Environmentalists argue that this may have negative impacts to riparianandaquatic

    ecosystems, while proponents claim these measures are usually only temporary, since a

    riverbed is naturally subject to permanent changes during largefloods and other events.

    Rafting contributes to the economy of many regions which in turn may contribute to the

    protection of rivers from hydroelectric powergeneration, diversion forirrigation, and

    other development. Additionally, white water rafting trips can promote

    environmentalism. By experiencing firsthand the beauty of a river, individuals who

    would otherwise be indifferent to environmental issues may gain a strong desire toprotect and preserve that area because of their positive outdoor experience.

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