The rocky passage is 150metres long and measures a towering
200metres in height - seven times as high as York Cathedral
Discovery 'It is a truly amazing sized cave and one of the most
significant discoveries by a British caving team,' said Adam
Spillane, a member of the 13-man expedition team. The cave was
originally discovered in 1991 by a Vietnamese Jungle man called Ho
Khanh. Local people had known of the cave but were too scared to
delve inside because 'it emitted a frightful wind and noise which
was due to a large underground river. But assisted by
representatives of Hanoi University of Science, the joint
British-Vietnamese Caving Expedition 2009 spent five days exploring
the cave in mid-April. The team spent six hours trekking through
the jungle to reached the cave. Climbing down into a large chamber,
they had to negotiate two underground rivers before reaching the
main passage of the Hang Son Doong. The cave is 6.5km long at
present but the end of the main passage still continues with a
calcite wall of over 45m high halting teams progress.
The team found an underground river running through the first
2.5 kilometers of the limestone cavern, as well as giant
stalagmites more than 70 meters high.
At least 80-by-80 meters in most places, the Son Doong cave
beats out the previous world-record holder, Deer Cave in
theMalaysiansection of the island of Borneo. Deer Cave is no less
91-by-91 meters, but it's only about 1.6 kilometers long.
For a couple of kilometers it is more than 140 meters wide and
140 meters high
Reason to not detected Son Doong had somehow escaped detection
during previous British caving expeditions to the region, which is
rich in limestone grottos. The terrain in that area of Vietnam is
very difficult, The cave is very far out of the way. It's totally
covered in jungle, and you can't see anything on Google Earth.
You've got to be very close to the cave to findit, Certainly, on
previous expeditions, people have passed within a few hundred
meters of the entrance without finding it. The team was told that
local people had known of the cave but were too scared to delve
inside. It has a very loud draft and you can hear the river from
the cave entrance, so it is very noisy and intimidating.
END of Prensentation Source: http://www.dailymail.co.uk/