OHS PLACES NEWARK EARTHWORKS HOME GREAT CIRCLE OCTAGON WRIGHT The Newark Earthworks are the most extensive, numerous and diversified in style and character, of any within the state. --Henry Howe 1888 The Newark Earthworks were the largest set of geometric earthen enclosures in the world. Built by prehistoric Hopewell people between 100 BC and AD 500, this architectural wonder of ancient America ...