Frank Robinson

Historical marker location:

2401 Ontario Street, Cleveland, Ohio

( Marker can be reached from the intersection of East 9th Street and Larry Doby Way, on the left when traveling north.)

Manager. 1975-1977.

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.