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[an error occurred while processing this directive]Cahokia Mounds State Historic Site

[an error occurred while processing this directive][an error occurred while processing this directive] Cahokia Mounds State Historic Site is a World Heritage Site in Illinois, protecting the largest pre-Columbian settlement north of Mexico. Within the 2,200-acre (8.9 sq km) site are some 120 man-made earthwork mounds, of which only 80 are still in standing today. They date to between AD 600 and AD1400, when a Native American culture developed there.

Cahokia Mounds was designated a National Historic Landmark on 19 July, 1964. On 15 October, 1966, it was listed on the National Register of Historic Places. It was named after the Cahokia people, a clan of Illiniwek people who were living in the area when the first French explorers arrived there in the 17th century. However, the Cahokia people were not necessarily the descendants of the Mississippian-era people who built the mounds. Scholars have not been able to identify the North American group associated with the mounds.


Monks Mound, Cahokia Mounds State Historic Site, Illinois, USA
Monks Mound, Cahokia Mounds State Historic Site, Illinois, USA
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The largest of the Cahokia Mounds is Monks Mound, which stands ten stories tall. Excavations conducted on top of Monks Mound revealed evidence of ruins, possibly a temple or palace of the ruler. To the west of Monks Mound is a circle of posts known as Woodhenge. It was named after Stonehenge, for it was also used to mark solstices and equinoxes.

Cahokia Mounds State Historic Site was inscribed as a World Heritage Site during the 6th session of the World Heritage Committee meeting at Headquarters in Paris, France, on 13 - 17 December, 1982.

World Heritage Site Inscription Details

Location: N 38 39 31 W 90 3 41 in St. Louis, Illinois, USA.
Inscription Year: 1982
Type: Cultural
Inscription Criteria: III, IV

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