The cave is 5.5 miles long and its largest chamber is 200 metres deep. The cave contains its own rivers and a rainforest with its own ecosystem.
Photographer Ryan Deboodt - who is based in Beijing - captured this incredible footage using a drone - it gives a fascinating aerial perspective of the scale and otherworldly beauty of the cave.
It is possible for tourists to explore the cave - but it will set you back around €2,800 ($3,000). For more information, click here
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