Oklahoma, US
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.
Listen to the audio guide for Devil's Canyon Free on WIP — starts by itself when you arrive, even with the screen off