It seems we love mine collapses at Boing Boing. The earlier posts got me to thinking about the Lake Peigneur disaster. The story is amazing but oh so familiar, a wayward oil company makes an error and mistakenly drains a lake into a salt mine. It is incredible and you can watch!
Previously on Boing Boing:
Video of a collapsing tin mine next to the ocean in Malaysia (1993)
Inside a mile-deep open-pit copper mine after a catastrophic landslide