The Black Hawk War

Historical marker location:

1411 N River Rd, Oregon, Illinois

( Marker can be reached from North River Road (County Road 33) just south of East Park Road, on the right when traveling south.)

Illinois was part of the French colonial empire, and the city of Cahokia, located near present-day Collinsville, was one of the largest pre-Columbian cities in North America. At its peak, around 1250 CE, Cahokia had a population of around 20,000 people.