Major mounds in the Cahokia-East St. Louis-St. Louis area. Note the tendency for many mounds to be located near the stream's or slough's edge (where slightly elevated ground representing old levees is located).

J.S. Oliver (Illinois State Museum-RCC, GIS Laboratory), & G.R. Milner (Penn State Univ.). SEE ALSO Milner, G.R. 1998. The Cahokia Chiefdom: The Archaeology of a Mississippian Society. Smithsonian Institution Press, Washington.