El Potrero Chico (“little coral”) is the world famous big wall sport climbing paradise in northern Mexico. It is an amazing climbing experience of a lifetime of well-bolted, multi-pitch sport routes with ratings from 5.7 to 5.14 and routes with up to 23 pitches.
The best of the Potrero Chico, by Magic Ed. Includes maps, topos and full color photos, but only features a limited number of routes and is several years old now. Also includes travel information, such as can be found on this website.