"The Great Serpent Mound is a 1,348-foot (411 m)-long, three-foot-high prehistoric effigy mound located on a plateau of the Serpent Mound crater along Ohio Brush Creek in Adams County, Ohio". Wiki - http://en.wikipedia.org/wiki/Serpent_Mound
Serpent Mound - Adams County, Ohio
Adams County Travel and Visitors Bureau - Serpent Mound - www.adamscountytravel.org - Adams County, Ohio - A patchwork of history and nature
SERPENT MOUND (Ohio) 800 BC-AD 100. 1330 feet in length and 3 feet in height. Representing an unwinding serpent, the mound is sheathed in mystery and controversy. The serpent is thought by most to be about to swallow an egg.
Serpent Mound in Winter Adams County, Ohio, OH - AirPhoto