by Marcia Napier, Grain Valley Historical Society
Did you know at one time the richest lead ore in the world was located in Bonne Terre, Missouri, and the surrounding area. When miners began excavating lead from beneath Bonne Terre, little did they know it would eventually be considered one of the best places to scuba dive in the country.
Operations in the mine were halted in the early 1960s and over time it filled with crystal-clear water. It now has become an amazing cave tour, and a top freshwater scuba diving venue. It is so amazing that even National Geographic calls it "one of America's Top 10 Greatest adventures.'