Fort Necessity

Historical marker location:

Williamstown, Ohio

( Marker is at the intersection of U.S. 68 and County Route 10, on the right when traveling south on U.S. 68.)

Marker installed: 1930

Ohio Revolutionary Memorial Trail.

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.