Originally Posted by Renner
Palm Springs and the Cahuilla desert is just a little farther north (as is Joshua Tree) but I don't know of a short way down.
Berdoo Canyon! This one looks a lot like Grapevine, but it is a lot longer and connects with Geology Tour Road in the park. Jumbo Rocks, White Tank or Belle would be a good spot to hunker down for the night.