By Michael Lanza
In the Southern California desert, where the Mojave and Colorado-Sonoran deserts overlap amid a sea of hundreds of granite monoliths, lies one of America’s most unusual outdoor playgrounds: Joshua Tree National Park. Long known as a mecca for rock climbers, with some 8,000 established climbing routes, the park also has miles of trails for hiking, running, and horseback riding, beautiful camping among rock formations where kids can scramble around, and a vast backcountry to explore within its nearly 800,000 acres, more than half of which is protected as wilderness.