collapses and floods it looks like. Here's the oops for the Pantai Remis mine

https://www.youtube.com/watch?v=H6Ma0SVjMHA

Lake Peigneur was swallowed by a whirlpool like in an anime, in a sad drilling that took away entire boats. The salt geologic bubble under the lake can absorb gigantic volumes of water, and a drilling for the exploitation of petrol initiated the hole.

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