Sandusky

Historical marker location:

Sandusky, Ohio

( Marker is at the intersection of Huron Avenue (U.S. 6) and Wayne Street, on the right when traveling east on Huron Avenue.)

Marker installed: 1937

Founded 1817.

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.