Old Stone Church

Historical marker location:

41 Hodges Rd, Radnor Township, Ohio

( Marker can be reached from the intersection of Hodges Road (Route 174) and Ohio Route 37.)

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.