This is forbidding Havasu Canyon, an offshoot of Grand Canyon National Park but on lands administered by the Havasupai Indian Tribe.
Summertime temperatures can reach 115 degrees Farenheit here. Yet each year, hundreds and perhaps thousands of hikers test it, just to reach the five Havasupai Falls therein. There are no roads to, or drivable overlooks of, the waterfalls or the tiny Supai Village nearby, but hikers with tribal permits may make the steep, draining 20-mile round-trip slog as the crow flies — a zig-zag 30 miles of actual footsteps. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally enhanced by rawpixel.