Start: Fort Davis NHSFort Davis NHSDavis Mountains Scenic LoopMcDonald ObservatoryMcDonald ObservatoryDavis Mountains Scenic LoopDavis Mountains Scenic LoopDavis Mountains Scenic LoopDavis Mountains Scenic LoopDavis Mountains Scenic LoopDavis Mountains Scenic LoopDavis Mountains Scenic LoopDavis Mountains Scenic LoopDavis Mountains Scenic LoopDavis Mountains Scenic LoopDavis Mountains Scenic LoopDavis Mountains Scenic LoopEnd: Ft. Davis Courthouse El PasoMonahan Sanddunes SP