The infamous Horseshoe Bend near Page, Az. Thanks to whoever the adventurous kayaker was giving me the nice campfire light to illuminate the canyon from within.
This is by far one of the most surreal and serene landscapes I've ever encountered. Called the Wave for obvious reasons, its hidden in the Coyote Butte wilderness area, a decent 7 mile hike through a hot desert. The best part about it, the BLM is super tight on permits, so only 10 groups are allowed a day, so you get this fantastic alien landscape almost entirely to yourself, I started hiking at sunrise and returned just after sundown, and only encountered 3 people all day. If you're ever in northern Az, put this place on your short list!