A coral reef is made of thin layers of calcium carbonate A coral reef is made of thin layers of calcium carbonate National Ocean Service National Oceanic and Atmospheric Administration U.S. Department of Commerce
Arches is located in northeastern Utah, near the city of Moab. The park is famous for over 2,000 natural stone arches and offers much to the outdoor traveler. There is a 40-mile paved loop tour of the park with numerous trailheads and outlooks.
Located just 5 miles (8 km) north of Moab is Arches National Park, which contains the world's largest concentration of natural sandstone arches. Although over 2,000 arches are located within the park's 76,518 acres, the park also contains an astounding variety of other geological formations.