Listings >> Moundbuilders Newark Earthworks (740) 344-0498 Website The Newark Earthworks in Newark and Heath, Ohio, consist of three sections of preserved earthworks: the Great Circle Earthworks, the Octagon Earthworks, and the Wright Earthworks. 455 Hebron Road Heath OH 43056 Get directions Moundbuilders Fri-Sun: 12:00pm - 4:00pm