Here's some of my favorite photos (the full list is here: http://picasaweb.google.com/DRGW497/OffroadPassportElCaminoDelDiablo).
Spooky desolation.
We were looking for a large Geo Cache, but we found this clever little one instead.
The Border Patrol checking us out.
Scott's Hole in the Rock camp site.
The Native American paintings by the water tanks.
This one looks like a head with flaming red hair. Maybe this is El Diablo.
George checking out the Border Patrol who were, in turn, checking us out.
The ranch at Bates Well.
Lots of Organ Pipe Cactus as we got near Ajo.