Roy H.
Yelp
Bring the entire family; the kids will absolutely love it. Just keep a close eye on the little ones and make sure the bigger ones are aware of the many dangers.
Jumbo Rocks is a first-come, first-served campground; you can't make reservations. It is the largest campground within JTNP with 124 sites. There is no running water, only vault toilets (which are kept fairly clean), so make sure to bring plenty along. It's pretty much centrally located within the park which makes it convenient to visit other nearby attractions within the park... and there's plenty of attractions all around.
Within a 15 mile radius of Jumbo Rocks there are several "Nature Walks"; Arch Rock, Barker Dam, Cap Rock, Cholla Cactus Garden, Hidden Valley, and of course you can't miss out on the Skull Rock Nature Trail - a short jaunt that starts and ends in the campground. And then there's Keys View, a must-see panoramic view of the Coachella Valley, the San Andreas Fault Line, the Salton Sea, and... on a clear day you can even see Mexico!
There are many trails for day hikes as well; Lost Horse Mine, Ryan Mountain, Queen Mountain, not to mention the potentially endless combination of hikes via the California Riding and Hiking Trail which traverses 35 miles throughout this amazing National Park. You can also blaze your own trail in just about any direction from the campground.
There is a main road through the campground which has sites located along it, but there are also 8 separate loops along the main road - 4 on the right and 4 on the left. Although there are more sites on the right (south) of the main road, some of the better sites (sites within the rock formations) are on the left. I suggest driving around a couple of times until you find the ideal site to stake your claim. Hint: The closer your camp is to the main entrance, the more traffic you'll see.
Most of the sites are within a half-mile of the main road (Park Blvd). If the entire campground were flat, I would imagine road noise would be an issue. But it's not... thanks to the anonymous giant who laid out all of the jumbo rocks within the campground. However, I've never stayed at one of the first few sites; they're too close to the entrance so everyone that comes into the campground passes by them, so I've avoided them ever since my first visit.
If you come here on a sunny day during early Spring just after a good rain, be prepared to witness a dazzling display of colors as the many assorted desert flowers emerge from their deep slumber. Enjoy...
"Today I don't need a replacement
I'll tell them what the smile on my face meant,
My heart going boom boom boom,
'Hey' I said 'You can keep my things,
they've come to take me home.'" - Peter Gabriel