Stock photography, photos: Sky on Fire at Arches Stock photos of A fiery sky at sunrise displays the silhouettes of rocky slopes. Arches National Park, Utah. Photograph: © Matthew Thalman Click for a larger image and more information Keywords associated with this stock photo: USA, United States of America, America, United States, US, arches np, arches national park, Utah, UT, National Park, National Parks, NP, park, parks, north america, orange, pink, scenics, sunrise, sun, sunlight, sky, silhouette