By Kayeleigh Sharp (SIUC) and Mark Wagner (SIUC) Millstone Bluff is a blufftop Mississippian-era (AD 1250-1500) site in southern Illinois that contains three rock art panels containing religious images that link together to form a cosmogram that expresses the Mississippian villagers' belief in a three-tiered universe (Upper World, This World, and Under World). The eastern panel contains only Upper World images (birds), the western panel contains only Under World images (snakes and … [Read more...] about 3D Photogrammetric Documentation of Eroded Rock Art Panel at the Millstone Bluff Site in Southern Illinois