Cahokia Mounds State Historic Site is located:
30 Ramey Street
Collinsville, IL 62234
Cahokia Mounds State Historic Site will be closed on Mondays and Tuesdays starting September 8th.
Cahokia Archaeological Society Meeting
Come at 6:30 pm to help wash artifacts. Program and meeting, 7:30 pm.
Spring Equinox Sunrise Observance
Meet at the reconstructed Woodhenge. Arrive by 6:45 am. to hear an explanation of the discovery, form and function of this ancient post circle monument used as a calendar by the Mississippians. No ceremonies will be conducted. Free.