Two s-160 locomotives double heading. Both have just received heaping loads of coal in the tender bunkers. 559 is leading the way and from the shadows and the sun angle, I suggest this is midmorning North bound freight out of Seward. Seward had coaling facilities with a clamshell crane bucket, the vegetation in the background with the mountains is proper. Another photo shows 560 setting in front of the Seward engine house. The tank car is Standard Oil which had facilities in Seward. In Whittier, Union Oil and the Army USATC had tank farms.
Notice that 560 has the white extra flags displayed. It is likely that 559 is just a helper to get the train up the 2.2% grade to Divide at MP12 or possibly at Grandview. The 559 could then cut off at the passing siding and 560 could make the run on North to Anchorage.
Also notice that the 560 tender is outfitted for rotary snow plow service with extended coal bunker sides and elephant ear doors to close over the coal load to keep the snow out. Too bad we cannot read the Mile Post marker and settle the question of location. Time is between 1944 and 1954 when these locomotives were retired. Both were sold in 1958 and shipped out of Whittier on the Bell Betty to Spain.