Watch this amazing sinkhole in action! A sinkhole forms when a cavern or space below ground collapses. The material above falls under gravity to fill the empty space below. Sometimes sinkholes can be caused by erosion, overpumping of water, loss of the water table, oil drilling and some natural causes as well.
This sink in Bayou Corne may have been due to a collapse of an underground salt dome.
May May read more about the sinkhole and the possibles causes here:
LA TIMES: Louisiana sinkhole video: Watch grove of trees disappear below ground
Louisiana sues Texas Brine for damage caused by Bayou Corne sinkhole
LA TIMES: When the ground drops: Sinkholes