The canyons of the San Juan and West Elk. Mountains descend through colorful igneous and metamorphic rock Layers with active volcanic geologic history.

Explore Technical descents of the waterfalls and narrows found in these spectacular mountain ranges surrounding iconic Colorado mountain towns including Ouray, Silverton, Durango, Pagosa Springs, Telluride, Marble Lake City and Creede along the Silver Thread Byway.

In addition to the new canyon descents, this book contains updated information on classic Ouray and Silverton canyon routes, with new details about exits and anchor.