Description | Close-up of Devils Tower, this sentinal of igneous rock rises up almost vertically from the landscape to a height of 1,267 feet. Devils Tower National Monument is located in northeastern Wyoming, in beautiful Crook County. The Tower and the surrounding 1,347 acres were designated as our nation's first National Monument by President Teddy Roosevelt in 1906. Scientists believe that Devils Tower is the core of a volcano exposed after millions of years of erosion caused by weather and the Belle Fourche River. |