Located across US-27 by Blue Grotto in Williston, Florida. On cold winter mornings you can see steam, like smoke, rising from the chimney opening. Thus, the early settlers gave this crystal clear water the name Devil's Den. With year round 72 degree water temperatures, this inverted mushroom shaped pre-historic spring has a 120 foot surface diameter and is a wonderful training site with very little silt and shallow depths that average between 50-55 ft..
60-80 degrees F