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| Early drawing of Poverty Point site in northeast Louisiana. The Poverty Point earthworks included a huge bird-shaped mound more than 70 feet (21 m) high and 710 feet (216 m) in length and a unique C-shaped array of raised berms arranged into six concentric and nested rings that are nearly three-quarters of a mile across (3,950 feet or 1.2 km) at the widest point. |