Listings >> To-Do >>Moundbuilders Serpent Mound Earthworks (800) 752-2757 Website The Great Serpent Mound is a 1,348-foot-long, three-foot-high prehistoric effigy mound on a plateau of the Serpent Mound crater along Ohio Brush Creek in Adams County, Ohio. 3850 Ohio 73 Peebles OH 45660 Get directions Moundbuilders To-Do Mon-Sun: 10:00am - 6:00pm May close seasonally.
