The Santa Catalina Mountains north of Tucson--whose summit is called "Frog Mountain" by native Tohono O'odham people--offer citizens of a major metropolis a wilderness in their own backyard. Today recreational facilities dot the Catalinas' peaks, while housing developments creep up their foothills. Charles Bowden and Jack W. Dykinga here convey the natural beauty of the Catalinas and warn readers that this unique wilderness could easily be lost through easy access and overuse.