Cahokia Mounds State Historic Site is the site of an ancient Native American city (650–1400 CE) near Collinsville, Illinois in the American Bottom floodplain, across the Mississippi River from St. Louis, Missouri. The 2,200-acre site included 120 man-made earthen mounds over an area of six square miles. Cahokia was larger than London was in 1250 AD.Cahokia Mounds
is the largest archaeological site related to the Mississippian culture, which developed advanced societies in eastern North America centuries before the arrival of Europeans.
I am strangely fascinated by this ancient culture, so I thought I'd share. (I also learned a great deal more about them while I was visiting the Chicago Field Museum last week.) Interesting stuff. Consider it your history lesson of the day. Enjoy!