Sinkholes are most common in regions where the rock below the land's surface is soluble. They are particularly common in Central Florida because the area sits on large amounts of limestone. Other states where sinkholes are common include Alabama, Kentucky, Texas, Missouri, Tennessee and Pennsylvania.
When rain water moves through soil and the rock below begins to dissolve, spaces and caverns are created. If the underground spaces get too big, a sudden collapse, or a sinkhole, occurs. Sinkholes typically develop when acidic rainwater dissolves limestone or a similar rock. When they develop, it is impossible for the ground to support the weight of anything above it, whether that is a house, a highway or an open field.