Cavers Reached the Bottom of Yemen's 'Well of Hell.'

 https://www.news18.com/news/buzz/cavers-reached-the-bottom-of-yemens-well-of-hell-heres-what-they-found-4249751.html

A very strange and potentially dangerous place.

https://www.indiatoday.in/science/story/well-of-hell-yemen-barhout-oman-cave-exploration-1857737-2021-09-27

https://phys.org/news/2021-06-danger-demons-yemen-mysterious-hell.html

https://en.wikipedia.org/wiki/Well_of_Barhout

https://www.youtube.com/watch?v=ksPMaYeNdNg

https://gulfnews.com/photos/news/danger-and-demons-yemens-mysterious-well-of-hell-1.1624362827042

https://www.news.com.au/travel/travel-updates/travel-stories/well-of-hell-omani-cavers-make-it-to-the-bottom-of-mysterious-hole/news-story/7ba6f001cd024ac98c3382b266cb62fd

https://desertshapes.blogspot.com/search?q=Well+of+Hell

https://desertshapes.blogspot.com/2008/07/incredible-discoveries-made-in-remote.html