John A. Wilson

Historical marker location:

209 North Findlay Street, Haskins, Ohio

( Marker is on North Findlay Street (Ohio Route 64), on the left when traveling north.)

Marker installed: 2003

The Great Serpent Mound, located in Adams County, Ohio, is a prehistoric effigy mound in the shape of a serpent that is more than 1,300 feet long. It is one of the largest effigy mounds in the world and is estimated to have been built by the Adena culture more than 1,000 years ago.