Geophysical Survey at the Cahokia Site, May, 2003

From May 17 through May 23, 2003, the author with the assistance of staff of Cultural Resource Analysts, Inc., workshop participants, and in cooperation with Dr. Rinita Dalan of Minnesota State University, collected near-surface geophysical data at the Cahokia Mounds State Historic Site in Illinois. This work, in connection with the National Park Service workshop, “Current Archaeological Prospection Advances for Non-Destructive Investigations in the 21st Century,” combined electromagnetic (mS/m), magnetic (nT), and magnetic susceptibility data in the exploration of two portions of the larger historic site known vernacularly as the “east palisade, Ramey Tract,” and the “west palisade” in the vicinity of the Twin Mounds.