In mid October, bright yellow cottonwood tree leaves frame Devils Tower in Belle Fourche River Campground, in Devils Tower National Monument, Wyoming, USA. Devils Tower is a butte of intrusive igneous rock exposed by erosion in the Bear Lodge Mountains, part of the Black Hills, near Hulett and Sundance in Crook County. Devils Tower (aka Bear Lodge Butte) rises dramatically 1267 feet above the Belle Fourche River, standing 867 feet from base to summit, at 5112 feet above sea level. Devils Tower was the first United States National Monument, established on September 24, 1906 by President Theodore Roosevelt.
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