County: St. Clair
Location: US alt. 40 near Cahokia Mounds
State Park (missing)
Erected: 01/01/1934 Erected by: State of Illinois
The Cahokia Mounds represent the most extensive prehistoric Indian remains in the United States. Eighty-five mounds are included in the group, which covers an area of 2000 acres. The site of successive Indian villages for centuries, these mounds are believed to have been built between 450 and 750 years ago.
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