Monks Mound, the largest man-made earthen mound in the United States at Cahokia Mounds State Historic Site in Illinois, USA.

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Cahokia located near Collinsville, Illinois is one of only twenty UNESCO World Heritage Sites in the United States. It is the largest prehistoric earthen construction in the Americas north of Mexico. This site was first inhabited by Indians of the Late Woodland culture about AD 700 and grew during the following Mississippian period until the 1300s.

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Size: 5032px × 3354px
Location: Cahokia Mounds State Historic Site, Collinsville, Illinois, USA, North America
Photo credit: © Carver Mostardi / Alamy / Afripics
License: Licensed
Model Released: No

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