You are in the CarrTracks website Picture Gallery.
According to S. Kip Farrington's book on Santa Fe's big three, this is engine 3770 with the Chief at Devore. I wish the resolution was better on these pictures.
This is the water stop and crossover at Keenbrook, just five miles up the hill from Devore.
This is at the north end of Devore. The train is crossing over Cajon Wash.