Octagon Earthworks’ alignment to maximum northern moonriseImage by John E. Hancock Spanning the fields of southern and central Ohio are the largest concentration of geometric earthworks in the world. These gigantic earthen enclosures were built by Native American communities nearly 2,000 years ago, made as special places to worship and connect. These monuments—which take the shape of large circles, squares, and octagons—were created with simple …
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