Lake Peigneur

What was once a 12-foot-deep freshwater lake became a 1,300-foot-deep saltwater lake after a disastrous turn of events in 1980.  A team of 12 men drilling for oil accidentally tapped into an underground salt mine; by doing this they created a deadly vortex that sucked in two drilling rig platforms, a barge loading dock, 70 acres of soil, trees, trucks, and a parking lot. The force that dragged everything down was strong enough to reverse the flow of a 12-mile-long canal and also suck in 11 barges.