Sinkholes form when groundwater seeps into limestone and erodes large amounts of it. This then makes the ground there unstable and at risk of sinking into the ground and when it does it is known as a sinkhole. Florida has so many sinkholes because of their local geography of wetlands and a moist climate. In colder temperatures the water that supports the walls in the sinkhole will lower which can cause the ground above to collapse in. A major hazard with sinkholes is the possibily of waste and garbage falling in and polluting local ground water.
Website Link and Info:
Link: http://plants.ifas.ufl.edu/guide/sinkholes.html
Authors: Center for Aquatic and Invasive Plants, University of Florida, and the Invasive Plant Management Section of the Florida Fish and Wildlife Conservation Commission
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