Expert says he's found bigger Ohio serpent mound

An anthropologist believes he's found a snaking prehistoric earthwork near Cincinnati more than twice the size of the celebrated Serpent Mound in southern Ohio's Adams County.

University of Cincinnati anthropologist Ken Tankersley says a mound running through Mariemont appears to be a serpent 2,952 feet long. He says he and his wife discovered the shape in 2007 while using satellite imagery to survey an earthwork first discovered more than 130 years ago.

Tankersley documented his find in a 2008 paper and more recently has been filling in community leaders. Some others doubt it's another snake.

Ohio Historical Society archaeologist Bradley Lepper thinks it's probably a prehistoric wall.

The Society says the Adams County mound is the largest serpent effigy in the U.S.

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