Well of Barhout
The 16th deepest cave in the world
112m · Depth
The Well of Barhout (also nicknamed Well of Hell) is a sinkhole in Al-Mahara, Yemen. It has a circular entrance that measures about 30 m (100 ft) wide at the surface, and it is 112 metres (367 ft) deep.
Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).