Before you get started, note that you'll need a wilderness permit to hike down into the bottom of the canyon. They can be obtained for free at the visitor center, but only 15 permits are issued per day for this trail. However, that's more than some other trails into the canyon.

"The hike down to the river is an almost constant battle not to wipe out or fall on your butt, as you hike down trails of gravel, loose rock, and scree fields," writes Julie on EarthTrekkers.com. "The way back up can be hot and exhausting. Your thighs are already fatigued from the journey to the river, and now they must carry you back up to the rim," she continues.

Most of the route consists of braided social trails that descend shifting, loose soil. In one section, a chain has been attached to a tree to provide a secure handhold through a particularly loose, steep section.

Just how steep is it? Most sources claim that this hike is about 3 miles round-trip, dropping over 1,800 vertical feet into the canyon in half that distance. However, according to FATMAP's measurements, even with a jaunt to the overlook, this route is only about 1.8 miles round-trip. That's an absurd amount of elevation change in such a short distance! Ensure that you're up for the challenge before you drop into the canyon, because there's only one way back up...