With SP's Palmdale Cutoff in the foreground we see a westbound freight descending "the long way". I believe that S siding has been removed since this photo.
Atchison Topeka & Santa Fe GP30s 3200 (ex-ATSF 1200) and 3213 (ex-ATSF 1213) at San Bernardino, California, on August 29, 1981.