Looking down the 3,100ft underground shaft of the cave near the village of Tian Xing in China.
The world's deepest cave is Krubera in Georgia, which is 6,822ft deep followed by
Lamprechtsofen in Austria 5,354ft and Gouffre Mirolda in France 5,335ft.
To compare, the world's tallest peak Mount Everest is 29,029ft high.
I don't know why I keep finding caves to post. You couldn't get me underground if you paid me. I get claustrophobic when the lights go out in a picture theatre.