National Geographic : 1951 Jun
741 Air Force Color Photo Earth Pigments, Surveyed from Desert View Watchtower, Spread a Pageant of Colors First Spaniards to see the gorge (1540) were turned back by the hazardous descent. An American explorer (1857) described the canyon as a "profitless locality . . . there is nothing to do but leave." The tower, built like an Indian citadel, contains observatory, souvenir shop, and kiva (ceremonial chamber).