We camped in this area for a week and it was a nice place to be off the road. You can dump and fill at the chevron in Ehrenberg. Then take Ehrenberg-Cibola road south east into the desert. You don’t have to go far, then just pull off. Note that the road is pretty washboard for a couple miles but we were fine in our nearly-40 foot rig if you take it slow. Easy access to town if you need to go back in but far enough off the road for quiet.