The Grand Canyon is one of the greatest natural wonders of the world and one of the main natural attractions of the United States. Location: The Grand Canyon is located in northwestern Arizona. Creation: This giant fault was formed over millions of years by the impact of the Colorado River, which cut a canyon through the Colorado Plateau. Dimensions: The Grand Canyon is more than 446 km long, 6 to 29 km wide, and up to 1.6 km deep. Ecology: Different ecosystems exist at different elevations o...