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Devil's Den is an underwater cavern in Williston. The roof of an underground river collapsed to form a window, exposing the river to the open air and resulting in the cave's formation. The cave is privately owned, and it is used for recreational activities, especially SCUBA diving and SCUBA training. Due to the water being underground, it remains at a constant temperature of 72 degrees. However, when the outside weather is cold, steam rises from the water's surface, causing early visitors to suggest it looked like a chimney from Hell – hence the memorable name. Only scuba divers and snorkelers are able to visit the cave on guided visits; it is not open to the public for general swimming.
5390 NE 180 Avenue, Williston, FL 32696
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