Devil's Den is a popular underwater spring located in Williston, Florida. It is known for its unique geological formations and crystal-clear waters, making it a favorite spot for snorkeling and scuba diving. The spring is part of the larger Florida Springs system and features a large, open cavern that attracts both divers and nature enthusiasts. The water temperature in Devil's Den remains a consistent 72 degrees Fahrenheit year-round, providing a comfortable environment for swimming. The site is surrounded by lush vegetation and offers a serene atmosphere, making it an ideal destination for those looking to explore Florida's natural beauty.