Devils Tower was proclaimed the fi rst national monument in 1906 by President Theodore Roosevelt. The formation escalates to 1,267 feet above the Belle Fourche River, just across the South Dakota border in Wyoming. Native American Indian legend holds that the rock sprang up just in time to save two girls from a bear. The fl uted nature of the rocks formed from the bear pawing at the rock. Devils Tower, formed by the intrusion of igneous material, is a sacred site for many Native Americans and is enjoyed by hikers and climbers for the activities offered at the monument.