The blue-green waterfalls of Havasu Canyon are among the Grand Canyon region's greatest treasures. Tucked in a hidden valley, the five stunning, spring-fed waterfalls – and their inviting azure swimming holes – sit in the heart of the 185,000-acre Havasupai Reservation. Parts of the canyon floor, as well as the rock underneath the waterfalls and pools, are made up of limestone deposited by flowing water. Known as travertine, these limestone deposits give the famous blue-green water its otherworldly hue.
The Havasupai Reservation lies south of the Colorado River and west of Grand Canyon National Park's South Rim – a three- to four-hour drive. Supai, the only village within the reservation – and indeed the entire Grand Canyon – is situated 8 miles below the rim. From Hualapai Hilltop, a well-maintained trail leads to Supai, the waterfalls and the Colorado River.