Nankoweap is the northernmost trail in
Grand Canyon National Park, and probably the most difficult, with a 6,000 foot elevation drop to the river, over the course of 14 miles, starting from a remote trailhead at the end of an unpaved forest track. At least one overnight stay in the canyon is required if hiking all the way to the Colorado. Apart from the spectacular scenery, one other attraction of the hike is a group of ancient granaries, built in alcoves in the vertical canyon walls, overlooking the river.