The Grave Creek Mound in the Ohio River Valley in West Virginia is one of the largest conicaltype burial mounds in the United States now standing 62 feet 19 m high and 240 feet 73 m in diameter The builders of the site members of the Adena culture moved more than 60000 tons of dirt to create it about 250150 BC Presentday Moundsville has developed around it near the banks of the
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