Preserve, eastern Utah, U.S. Located on the Colorado River north of Moab, the preserve was established as a national monument in 1929 and as a national park in 1971.
Its area is 115 sq mi (298 sq km). The park's red limestone has been eroded into unusual shapes, including Courthouse Towers, Fiery Furnace, and Devils Garden, the site of Landscape Arch, at 291 ft (89 m) the longest natural rock bridge in the world.