This photo pair was taken at the Riley Creek railroad trestle looking south. The trestle is still today the original one completed in 1922 and is listed on the National Register of Historic Places. The buildings in the lower right corner of the photo are what remains of the Alaska Engineering Commission camp that was established to support trestle building. The 1924 wildfire captured in the early photo was a major driver of vegetation change in the Denali front-country area. Areas severely affected by the fire appear to have transitioned to be dominated more by deciduous trees and shrubs rather than spruce trees. Notice all the light green leaves visible throughout the dark green spires of the spruce trees in the 2010 photo.