This prominent topographic feature, located about three miles north of Decatur near Milepost 152 on US 75, overlooks the Missouri flood plain. Traditional Omaha tribal accounts indicate several prominent chiefs, including Blackbird and Big Elk, are buried here. The promontory served as an important natural landmark and meeting place for early European and American travelers including Lewis and Clark (1804-06), naturalist John Bradbury (1809), and George Catlin (1833). In a downslope gorge, natural sandstone bedrock exposures display a fascinating collection of Native American rock carvings, or petroglyphs, which depict human and animal figures as well as supernatural beings. Tribal or chronological affiliation of the carvings is unknown; however, one resembling a human on horseback suggests that it was created after A.D. 1700.