Devil's Den Prehistoric Spring and Campground is a hidden gem in Florida, offering a unique underwater adventure for scuba divers and snorkelers. The spring, nestled within a cave, boasts crystal-clear waters and ancient fossils dating back to the Pleistocene Age. In the cave you can only snorkel or scuba dive. The property also has another natural spring that's not in the cave where visitors can swim and enjoy the day. They have a food truck on Saturdays and have some lawn games as well. There is a full hook up campground attached to the spring that cost $275 for the week (as of February 2025).