24X Arches National Park Skull Arch, Arches National Park, Utah, USA #21458 Twin Arch is most often called the more intriguing “Skull Arch” formed by two adjacent potholes weathering through the “ceiling” of a sandstone alcove. Located deep within the Fiery Furnace area of the park, a confusing maze of sandstone fins, the arch also invokes images of eyeglasses, binoculars and even as the leg openings in a pair of shorts! Photographer- Diane Allen Postcard size 4 x 6