Zion National Park covers 229-square-mile (590 km2) in southwest Utah. Zion Canyon, which is 15 miles (24 km) long and up to half a mile (800 m) deep, cuts through the reddish and tan-colored Navajo Sandstone by the North Fork of the Virgin River. The lowest elevation is 3,666 ft (1,117 m) and the highest elevation is 8,726 ft (2,660 m). Located at the junction of the Colorado Plateau, Great Basin, and Mojave Desert regions, the park’s unique geography and variety of life zones allow for unusual plant and animal diversity. Numerous plant species as well as 289 species of birds, 75 mammals (including 19 species of bat), and 32 reptiles inhabit the park’s four life zones: desert, riparian, woodland, and coniferous forest. Zion National Park includes mountains, canyons, buttes, mesas, monoliths, rivers, slot canyons, and natural arches.