CNN Anderson Cooper 360 March 5, 2013 03:31:00
>> yes. >> reporter: geologist says sunshine state home owners might be surprised to find out how common these are. >> what are the chances of someone having a house in central florida and living on top of something like this? >> very good. not as probably as dlees the surface as this but you definitely have cavities of this size all over the state of florida. >> fossils found in this sink hole show it has been around since the ice age but no different from the sink holes we see opening up today. these are just a few of the pictures. one thing they all have in common is water. >> rain water is...
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