From Ohio History Central
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The "Great Hopewell Road" is a set of parallel earthen embankments approximately three feet in height and 200-feet apart that extended from an opening in the octagonal earthwork at the Newark Earthworks at least 10 miles to the southwest. The orientation of the walls would lead, if continued on a straight course, to Chillicothe. It is thought to be a ceremonial road linking these two largest centers of Hopewell culture ritual architecture.
Similar roads are known to have been built by the Anasazi culture in New Mexico and the Mayan civilization in Guatemala and Honduras.