The Western Illinois Society continued is prgoram for the Year of Western Illinois Archaeology and celebrated National Archaeology Day on Saturday, October 22, 2011 with a field trip to Cahokia National Historic Site in Collinsville, Illinois. About 25 people enjoyed a tour of the site led by William Iseminger, assistant site manage in charge of exhibits at Cahokia. The trip was funded by an Outreach Grant from the Archaeological Institute of America. For more photos of this trip, click here.