World's Most Stunning Sinkholes

Agrico Gypsum Stack

The most devastating sinkhole erosion in Florida occurred in 1994 when a 15-story sinkhole tore open right beneath an 80-million-ton pile of gypsum stack. The cave-in dumped 4 million to 6 million cubic feet of toxic and radioactive gypsum and waste water into the Floridian aquifer, which provides 90 percent of the state’s drinking water.