Exploring Serpent Mound

Historical marker location:

Peebles, Ohio

( Marker is on Ohio Route 73, 1 mile west of Horner Chapel Road (County Road T-116), on the right when traveling west.)

Fredric Ward Putnam.

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.