The Grand Canyon National Park

The Grand Canyon National Park, a UNESCO World Heritage Site, is located in north-western Arizona. The 277 miles (446 km) long and 18 mile (29 km) wide canyon carved by the Colorado River is the central feature of the park based in the unincorporated areas of Mohave and Coconino countries. The Grand Canyon, a part of the Colorado River basin, is a result of the erosion over the past 40 million years. Known for its colorful and intricate landscape, apart from in the Grand Canyon National Park, the canyon can be experienced from the Grand Canyon-Parashant National Monument, the Navajo Nation, the Kaibab National Forest, the Havasupai Indian Reservation and the Hualapai Indian Reservation. The Grand Canyon National Park has two primary public areas – the North and South Rims. The rest of the 1902 square mile (4926 sq. km) park is remote, and only some parts of it are accessible by backcountry roads and pack trail.