[SunkenCiv]

I heard about this from the POV drone guy on YouTube, he listed his top world sites he'd like to visit. A couple looked pretty interesting, this is one of them. Here are related selections from the sinkhole/s keywords:

• Scientists keep finding 'heavenly pits' in China that are teeming with life and long lost DNA [05/12/2024]
• Giant sinkhole with a forest inside found in China [05/15/2022]
• The World's BIGGEST HOLES [09/25/2016]
• Prehistoric animal remains discovered in U.S. [08/09/2014]
• Wyoming cave dig unearths bones of ancient horses, cheetahs and bison [08/09/2014]
• West US cave with fossil secrets to be excavated [07/27/2014]
• Man with b***s of steel jumps into world's largest sinkhole with no gear [07/02/2014]
• Giant sinkhole in Guatemala looks as if it goes to centre of the Earth [06/01/2010]
• Sinkhole Holds 12,000-Year-Old Clues to Early Americans [02/19/2009]

[chief lee runamok]

  A hind end view from space

[Jamestown1630]

That is very cool.

(and beautiful photography.)