Retired archaeologist and Cahokia Mounds assistant manager Bill Iseminger spekas to a gathered crowd at a Fall Equinox observation ceremony in Cahokia Heights National Historic Site on Sept. 22, 2024.

COLLINSVILLE — A movement to designate Cahokia Mounds State Historic Site as part of the National Park System may be picking up again. U.S. Sens. Dick Durbin and Tammy Duckworth have ...

Located near present-day St. Louis, Missouri, the population of Cahokia grew as high as 20,000 people, and was likely the largest ancient civilization in the United States.

Cahokia Mounds | Collinsville, Illinois Pre-Columbia, Cahokia Mounds was the largest, most complex urban center north of Mexico. Between 1050 and 1200 CE, Cahokia was larger than London with nearly 20 ...