Arch Rock is a 25-foot natural arch located in Joshua Tree National Park. It is accessed from the Arch Rock Nature Trail (less than 1/2 mile loop) which begins by campsite #9 in White Tank Campground off the Pinto Basin Road. You’ll see many other examples of sculpted granite along the way.
Links: Joshua Tree Nature Trails
Explore California 
Been there. Rock climbers used to do bouldering on the formations.
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