The campus has 20 conical, linear, and animal effigy mounds built between about 400 and 1200, created by Native Americans identified by archaeologists as Late Woodland people. One of the mounds, in the shape of a turtle, inspired Beloit's symbol and unofficial mascot. The mounds on Beloit's campus are "catalogued" burial sites, and therefore may not be disturbed without a Wisconsin Historical Society permit. Several of the Beloit College sites have been partially excavated and restored, and material found within them—including pottery and tool fragments—is held in the college's Logan Museum of Anthropology.