Devil's Canyon
Oklahoma, United States
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.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).