Devil's Canyon, in present-day Kiowa County, Oklahoma, was the site of the first formal contact between the United States government and the Plains Indians. On July 21, 1834, US troops under the command of Col. Henry Dodge escorted government officials to a peace conference at the Wichita village on the prairie at the confluence of the canyon and the North Fork of the Red River.It is currently listed as one of Oklahoma's three National Natural Landmarks by the National Park Service, having been designated as such in 1974. The other two are McCurtain County Wilderness Area (designated 1974) and the Salt Plains National Wildlife Refuge (designated 1983).
