Find your next adventure at the world’s largest freshwater dive resort.
The historic Bonne Terre mine offers guided underground boat and walking tours and is open 7 days a week from mid-May to early September. Winter hours are limited to Fridays, Saturdays, and Sundays only. A 45-minute walking tour takes you through the section of the mine that was dug out by hand with shovels and pickaxes in the 1800s. During the boat tour, you will see the largest parts of the mine and see what it is like to float on the beautiful crystal clear subterranean lake. The walking tour is included in the purchase of a boat tour ticket, and group rates are available for groups sizes over 20 people.
For those who know how to scuba dive, feel free to enjoy a breathtaking dive in the Billion Gallon Lake inside the mine. You will find consistent diving conditions year-round, which makes trip planning very flexible. There are 24 different diving trails that average 40 to 60-foot depths. Be sure to bring a GoPro to capture out of this world underwater photography during your trip. This is a unique full-service diving resort that you have to see to believe.