Wow - I knew that was a thing in the past but didn't realize it still went on.

If memory serves, the largest loss of life in a natural disaster in human history happened in China I think in the 1400's (?) when a huge chain of cave habitats collapsed and like 300,000 people died.

Apparently these caves were of very soft stone which made them easy for people to carve into but also ultimately ended in the catastrophe named above.