From CNN - A sinkhole in west-central Florida has opened again, roughly 12 years after it killed a man when it opened under his bedroom, officials said this week. It’s the third time the sinkhole in Seffner, roughly a 15-mile drive east of Tampa, has opened.
After the hole claimed the life of Jeff Bush in 2013, sending him plunging dozens of feet into the earth, Hillsborough County filled the hole and bought the property and home next to it to make sure no one lived too close. Then, in 2015, the hole reopened – about 20 feet wide at the time – and was again filled. No one was injured in the 2015 reopening.
Sinkholes are common in Florida due to the state's unique geology, which features a thick layer of porous limestone bedrock that is easily dissolved by acidic groundwater. Human activities, such as pumping large amounts of groundwater and construction, can accelerate the formation of these underground cavities and lead to the collapse of the surface. The process is also affected by rainfall, with both droughts followed by heavy rain, and just heavy rainfall itself, increasing the risk. Most of Florida is underlain by thick deposits of porous limestone, which is susceptible to erosion.
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