Many people don't realize Indian Cove campground is an option in Joshua Tree- mostly because it is accessed from outside the park (can't drive there from the park loop). Although it is a bit remote from the other main attractions in the park, Indian Cove has some real merits 1) Typically less of a zoo than the rest of the park 2) more protected and slightly lower elevation can make it significantly warmer on the cool/windy days 3) some solid climbs (yes they tend to be shorter than the other spots, but still worth a visit!). Rattlesnake Canyon provides hiking access to the northern side of Wonderland of Rocks, an incredible alien landscape of monzogranite boulders and other funky formations. Another plus here is that they take reservations, so if you plan ahead you can lock something in and not have to leave it to chance.