Man Killed By Sinkhole

On March 1st, 2013, a sinkhole opened up beneath a man's bedroom in Florida, swallowing him and all of his bedroom. When the authorities arrived, it was about 30 feet wide and still expanding, and they found no signs of life. Presumed dead, the mans body was never recovered, and the rest of the residents in the home were evacuated. Sinkholes are very common in Florida, but it is more or less rare to see them this large.

Sinkholes are formed by the eroded underground caves that groundwater goes through giving way to the weight of the surface. The most likely cause of this sinkhole is excessive groundwater pumping and construction in that area, but it could be a natural sinkhole, like the Devil's Millhopper, a Florida State Park built around a sinkhole that goes down over 100 feet and is about 500 feet wide. It is called the Devil's Millhopper because of its resemblance to the hopper of a mill and the many bones found at the bottom, which suggest the path animals took to meet the devil.

Not all sinkholes are as devastating, though. Many of the lakes you see in Florida are the result of sinkholes being filled with rainwater. The reason we see so many in Florida, though, is the rocks that lay beneath us. Many of them are susceptible to being easily, and quickly, eroded. Then, with the excessive use of the ground water within the rocks, the caves are left and eventually give way under the weight of the surface, or in the case of Jeff Bush, your own bedroom.

(Sources)
http://gawker.com/5987806/100+foot-sinkhole-opens-in-florida-bedroom-swallowing-and-killing-man

http://www.dailymail.co.uk/news/article-2287995/First-look-deadly-sinkhole-swallowed-man-slept-brother-claims-authorities-save-him.html

http://www.cnn.com/2013/03/01/us/florida-sinkhole

http://www.floridastateparks.org/devilsmillhopper/

http://en.wikipedia.org/wiki/Devil's_Millhopper_Geological_State_Park

http://www.sinkhole.org/facts.php