Mining History and Geology of Joshua Tree National Park

Joshua Tree National Park, one of the Big Four of California's world-class desert preserves, protects over 1000 square miles of magnificent desert and mountain wilderness in three major ecosystems, the high Mojave Desert, the low Colorado Desert, and the pinyon/juniper uplands of the Little San Bernardino Mountains. This guidebook from San Diego Association of Geologists contains an 18-mile self-guiding tour.