This camp area is an OHV entrance/camp spot. There are tons of sites, and if it's crowded you might be camped pretty close together. I gave this a 4-star because of the OHV noise and crowding, but it's a much better stop on the weekdays.
That said, there's LOTS of room, sites are available in the trees or out in the open (think solar). The main open area is almost a mile by a half-mile -- like 300+ acres!!! AND there are smaller, more isolated spots further on up the road. It might be possible to get away from the crowds and noise, but we didn't try, we just moved to another place up the highway.
In the large open area: Remember that wind and dust go together, and park accordingly. The dark-gray areas are volcanic ash and produce less dust.
NOTE: there are a bunch of historical camp sites right close to the highway, on the entrance road, but they're closed now, full of no-camping signs. Just drive in 1.5 miles until you see the big sign (photo).