Belle Campground is normally the best choice you will have for peace regarding camping choices in Joshua Tree National Park. It also has three climbing formations: Castle Rock (with End Block), Short Cake Rocks and Half Rock. Short Cake Rocks is broken down in the guide as three separate formations although they all practically touch. Miramontes guide has them marked as all day sun routes, but depending on the time of year, that is not necessarily the case. Half Rock is the obvious half remains of a massive boulder almost due west of Short Cake Rocks by not even 5 minutes. This large sliced boulder leans against other boulders to form a significant cave like setting underneath. Vanishing Desert, 5.8*, is a short bolted climb worth doing if you are in the area. Kinder and Gentler, 5.6, shares the same start. All the climbs are bolted even though the guide shows some of them as mixed. Fixed rap down the southwest face.
When you pull into the campground proper, End Block is what you are looking at with Castle Rock located directly behind it. Half Rock and Short Cake Rocks are the only other two climbing formations in the Campground and neither are surrounded by campsites. Both are located the same distance south from Castle Rock. Half Rock is easily identifiable as half of a massive boulder to the west of Short Cake Rocks. Short Cake Rocks is a compilation of massive boulders to the east of Half Rock. Both are to the south of Castle Rock, approximately a 5 minute walk, and easily identifiable by the photos.