Horseshoe Beach, Florida

Devil's Den Spring is a privately owned scuba diving training center and premier prehistoric spring destination in Williston, Florida, featuring an underground spring within a 120-foot wide cave with constant 72-degree water temperature year-round. It offers scuba diving for certified divers, snorkeling by reservation, camping (tent, RV, cabins), and exploration of ancient fossils and rock formations dating back to the Pleistocene Age.