25th Anniversary

Historical marker location:

920 South Main Street, St. Charles, Missouri

( Marker is on South Riverside Drive east of Boone's Lick Road, on the right when traveling south.)

Marker installed: 2015

Katy Trail State Park. 1990-2015.

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.