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The nation's first national monument, Devils Tower, looms prominently over the Belle Fourche River in a place where the pine forests of the Black Hills merge with the grasslands of the rolling plains. This imposing formation, located 28 miles northwest of Sundance off WYO 24, is a stump-shaped cluster of rock columns 1,000 feet across the bottom and 275 feet across the top. The cluster rises 1,280 feet above the valley to a height of 5,117 feet above sea level. With its sides appearing to have been goug
