Stock photography, photos: Double O Arch and Sandstone Fins Stock photos of Sandstone fin formations seen through top of Double O Arch. 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, north america, National Park, National Parks, NP, park, parks, scenics, sandstone, rock, rocks, double o arch, arch