Buckskin Gulch, Utah, 2003Photograph by Bill HatcherDark clouds roll over Paria Canyon-Vermillion Cliffs Wilderness in Utah. The 112,500-acre (45,527-hectares) area in northern Arizona and southern Utah is known for its towering stone amphitheaters, sandstone arches, and the Vermillion Cliffs, all painted in dramatic streaks of red, pink, and orange, thanks to heavy iron deposits.