Arches National Park lies 5 miles northwest of Moab on US 191. The rugged area contains the largest number of natural stone arches in the country. Along with more than 2,000 arches are many red rock canyons, spires, fins and balancing rocks. The erosion of the Entrada Sandstone, a 300-foot-thick layer of rock that was deposited as sand 150 million years ago, created these formations. Learn More...