The Grand Canyon lies in northern Arizona, USA, on the Colorado Plateau—a region of high desert, mesas, and buttes. Carved by the Colorado River over millions of years, it stretches 446 kilometers (277 miles) long, up to 29 kilometers (18 miles) wide, and over 1,800 meters (6,000 feet) deep.
Grand Canyon National Park, established in 1919, protects this geological masterpiece and its diverse ecosystems. The South Rim is the most accessible and visited; the North Rim is higher, cooler, and less crowded. The canyon reveals nearly two billion years of Earth's history in its layered rock walls.