A red-rock stunner on the border of Arizona and Utah, The Wave is made of 190-million-year-old sand dunes that have turned to rock. This little-known formation is accessible only on foot via a three-mile hike and highly regulated.
Spooky Gulch, Utah - Located off the aptly named Hole-in-the-Rock Road in Coyote Gulch, southern Utah, Spooky Gulch is so-called because so little sunlight is able to reach its sandy, streambed bottom. No wider than 15 inches in most places, it is 30 feet deep. www.facebook.com/loveswish