Historical Marker
Henry Collins Building
Historical marker location:
326 North Main Street, Hannibal, Missouri
( Marker is at the intersection of Main Street and Hill Street, on the right when traveling north on Main Street.)
The town of Bonne Terre, Missouri, has the largest underground lake in the United States. The Bonne Terre Mine was once one of the world's largest lead mines, but is now a popular scuba diving destination.