Bonne Terre Mine in Missouri is a unique dive site located 1/4 mile below a town. This former mining site, now filled with crystal-clear water, offers divers 17 miles of navigable trails and stunning underwater views. Visibility can reach up to 100 feet, and most dives occur between 40 and 60 feet deep. With its rich history and beautiful underwater environment, Bonne Terre Mine is a must-visit for any scuba diving enthusiast.