Just returned from Big Bend and enjoyed it very much. As we were driving into the Chisos Basin we passed a bear warning sign, rounded the next bend and there were a mama bear (black bear) and 3 cubs walking in the middle of the road. Be sure to stop at the store at Castolon. We stayed in Marathon TX at the Marathon Motel and RV Park. Its a small campground with dirt interior roads and sites. The bathhouse contains one female and one male bath. While it was clean we did shower in the AS. We would stay again. Not much in Marathon but be sure to visit the Gage Hotel.
Remember its not the destination, but rather the journey.... its what's in the middle that matters the most!