Hang Son Doong .
Hang Son Doong located in Vietnam is said to be the largest cave in the world by volume with a length of approximately 9 Kilometres and a depth of about 150 metres.
FEATURES:
This cave has an internal fast flowing subterranean river . The cave is believed to be about 2 to 5 million years old.
The cave possesses 2 large dolines which were formed by the collapsing of the roof of the cave.
These dolines allow for sunlight to enter some parts of the cave aiding the growth of trees and other vegetations.
SIZE:
Has an estimated volume of about 38.5 million cubic meters (about 1.35 billion cubic feet). In fact, it is said that a New York city block with 40 storey sky scrappers could fit into this cave
All in all, the cave’s interior is so large it could have a Boeing 747 fly comfortably through without it’s wings being in danger.
DISCOVERY / EXPLORATION:
The entrance to this cave was first discovered in 1991 by a local resident of the area named Hõ Khanh but the cave became internationally known in 2009 when a group of Cavers from British Cave Research Association conducted a survey in Phong Na-Kè Bàng.
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