The most notable aspect of Cahokia today are the 80 mounds of earth, some as high as 100 feet, which dot the 2,200-acre site. These helped create a network of plazas throughout the city, and it is believed that important buildings, like the home of the settlement’s chief, were built on top of them. The site also features a series of wooden posts that archeologists have dubbed “woodhenge.” The posts are said to mark the solstices and equinoxes, and supposedly figured prominently in the community’s astronomical mythology.
Although scientists are constantly discovering new information about the Cohokia community, the biggest mystery that remains is which modern Indian tribe is descended from the residents of the ancient city, as well as just what it was that caused them to abandon their settlement. Cahokia Mounds is NOT in the city of Cahokia. It is located in Collinsville, Illinois.