The Dirty Devil River flows between Hanksville, Utah and the Colorado River, at the top of Lake Powell, what was once the start of the much missed Glen Canyon.
Some of the Dirty Devil's side canyons can be reached from the hard to reach Maze district of Canyonlands National Park. The most well known of these side canyons is Robber's Roost, a hideout for Butch Cassidy and the Wild Bunch. I spent three days in this area, the first in the following slide show.
The last side canyon in the presentation, the slot, is Happy Canyon - one of the world's best and nearly a mile long.