A couple weeks back I went out to visit one of the strangest places I've ever been. It's a pocket of the Southwest that's become notorious in the world of recreational vehicle drivers. A million or more of them visit every year, creating a temporary metropolis of RVs out in the desert. They park in RV lots, on streets, and -- in vast quantities -- out in the desert on open land provided by the Bureau of Land Management. It's not just numbers that makes this place unique. It's the community that forms.