This panoramic photograph of Delicate Arch features a late-day view of Arches National Park''s most famous icon. Delicate Arch balances at the edge of a canyon and can be reached via a three-mile (round-trip) walking trail. Water and ice, extreme temperatures, underground salt movement and 100 million years of erosion are responsible for the scenery of Arches National Park. Delicate Arch is carved from sandstone deposited during the Jurassic Period some 150 million years ago. There are more than 2000 cataloged arches in the area, including some of the most scenic arches in the world. In the distance are the snow-covered La Sal Mountains.