The Tegtmeyer Site in Piney Creek Ravine State Natural Area in southern Illinois is a prehistoric rock art site centered on a sandstone rock shelter north of Piney Creek. The shelter preserves two ancient images, described as petroglyphs painted on the rock: a winged human-like figure in flight and a winged animal-like figure that may also be flying. Because the shelter was not suitable for habitation, it is understood as an archaeological site with a limited artistic purpose rather than a settlement. Its imagery closely resembles that of the nearby Piney Creek Site, linking it to the Mississippian period and a broader prehistoric artistic landscape in the ravine.