Giant cave hall found down sinkhole – BBC News
Giant cave hall found down sinkhole – BBC News undefinedChinese and British climbers have found a cave hall at the bottom of a 200-metre long sinkhole in Guangxi, China, state TV says.
The large cave hall is estimated to be 6.7 million cubic metres.
The team lowered themselves into the sinkhole using a single rope.
It is hoped the discovery will help geologists to understand the region better.
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