This Boulder

Historical marker location:

Malta, Ohio

( Marker can be reached from the intersection of Main Street and 5th Street, on the right when traveling south.)

Marker installed: 1923

Gettysburg Boulder.

The Ohio River, which forms the state's southern border, played a significant role in the Underground Railroad, a network of secret routes and safe houses used by African American slaves to escape to freedom in the North before the Civil War.