Zion National Park is an American national park located in southwestern Utah near the town of Springdale. Located at the junction of the Colorado Plateau, Great Basin, and Mojave Desert regions, the park has a unique geography and a variety of life zones that allow for unusual plant and animal diversity. Numerous plant species as well as 289 species of birds, 75 mammals, 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. The lowest point in the park is 3,666 ft at Coalpits Wash and the highest peak is 8,726 ft at Horse Ranch Mountain. A prominent feature of the 229-square-mile park is Zion Canyon, which is 15 miles long and up to 2,640 ft deep. The canyon walls are reddish and tan-colored Navajo Sandstone eroded by the North Fork of the Virgin River.