IR 18 is one of several long roads that lead towards the southwestern part of the Grand Canyon; from Peach Springs in the
Hualapai Reservation the 66 mile route crosses a forested plateau then descends through empty, grassy plains into the
Havasupai Indian Reservation, the most remote of the many Indian lands in Arizona. The territory has only one village,
Supai, located 8 miles beyond the end of the road on the floor of red-walled Havasu Canyon, and 4 miles from the Colorado River. Havasu is one of the longest tributaries on the south side of the Grand Canyon and runs through the center of the reservation which extends about 6 miles at either side.
The attraction of the area for visitors is
Havasu Creek, a year round stream with unusual aquamarine water that flows by the village and descends another 1,400 feet passing over five waterfalls, the highest being
Mooney Falls with a drop of 200 feet. The most popular and oft-photographed is the 100 foot
Havasu Falls which like Mooney has a beautiful deep blue pool beneath, surrounded by thick green vegetation. Despite the effort required to reach the falls, Havasu Canyon has become one of the top attractions in all of Arizona, and is considered by some to be one of the most beautiful places on Earth, because of the exceptional scenery, the traditional Indian village of Supai and the chance to camp right by the creek. Although only 30 miles west of the populous South Rim of the Grand Canyon, the trailhead for Supai is 200 miles away by road.