One-of-a-kind freshwater diving with practical, convenient accommodations.
Travelers would not choose the Bonne Terre Mine for its guest rooms alone. They are bare bones. The reason guests stay here is for access to the largest freshwater dive resort on the planet. A National Historic Site known as Billion Gallon Lake, this unique destination has been explored by Jacques Cousteau, offers year-round 100-foot visibility and features guided dives up to 60 feet among calcium falls, a former elevator shaft and mining artifacts.