Dean M. Chriss
Last Light, Devil's Tower, Wyoming
(Click image to enlarge)
Devil's Tower, a sacred place for many native Americans, rises 1,267 feet above the Belle Fourche River which meanders nearby. Theodore Roosevelt proclaimed it America's first National Monument on September 24, 1906. The tower is made of magma that solidified not far below the earth's surface. Eons of erosion have stripped away the overlying layers of rock, leaving the tower we see today.