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Prentiss Gray found this low pass through the mountains for the Canadian National Railroad - Gray Pass (?)

Photograph depicts a snow covered mountain rising from the valley below.

Photograph depicts a snow-covered valley, covered with brush.

Photograph depicts a mountain pass covered in snow with trees on either side of the pass.

Photograph depicts a man standing at a campsite with three tents in a forest clearing with snow-covered trees in the background.

Photograph depicts a snow-covered campsite with three tents, situated in a forest clearing.

Photograph depicts a snow-covered mountain with a valley below.

Photograph depicts a valley covered with trees and snow leading up to a snowy mountain range.

Photograph depicts snow-coved mountain peaks.

Photograph depicts snow-covered mountain peaks with trees at the base of the mountain.

Photograph depicts snow-covered mountain peaks.

Photograph depicts snow-covered mountain peaks with a tree line in the foreground.

Photograph depicts snow covered mountain peaks seen through a mountain pass near Jasper Park.

Photograph depicts snow-covered mountain peaks visible above the top of a line of trees.

Photograph depicts an aerial view of a snow-covered mountain range.

Photograph depicts a snow-covered mountain range with forested foothills in the foreground.

Photograph depicts a snow-covered mountain range with forested foothills below.

Photograph depicts a snow-covered mountain range with a forested plateau in the foreground.

Photograph depicts a snow-covered mountain range in the Canadian Rockies.

Photograph depicts a snow-covered mountain range seen from above the treetops.

Photograph depicts a snow-covered mountain ridge.

Photograph depicts snow-covered mountain slopes seen through a tree-covered mountain pass.

Photograph depicts a snow-covered mountain visible from beyond a line of trees with a grassy plateau in the foreground.

Photograph depicts snow-covered mountains in the distance with a grassy plain in the foreground.

Photograph depicts a snow-covered plateau leading up to forested foothills and mountain ridges.

Photograph depicts a snow-covered plateau with tree-covered foothills and a mountain range in the background.

Photograph depicts a snow-covered rocky mountain slope.

Photograph depicts a snow-covered rocky mountain slope.

Photograph depicts a close-up of a snow-covered rocky mountain slope.

Photograph depicts a snow-covered valley filled with brush.

Photograph depicts a snowy grassland in the foreground with a forested area in the background.

Photograph depicts a snowy mountain landscape with a tree-covered plateau in the foreground.

Photograph depicts a snow-covered mountain range with a forested area in the foreground.

Photograph depicts a snowy mountain landscape covered with barren trees.

Photograph depicts a snowy mountain landscape in the Canadian Rockies where Prentiss Gray found his prized mountain goat.

Photograph depicts a snowy mountain landscape seen from above the timberline.

Photograph depicts a snowy mountain peak with a stand of trees and valley floor in the foreground.

Photograph depicts a forested mountain slope leading up to a snow-covered peak.

Photograph depicts snowy mountain peaks with trees at the base.

Photograph depicts snowy mountain peaks and footprints in the snow from a hunting guide in the foreground.

Photograph depicts a mountain range in winter through a snow-covered tree line.

Photograph depicts a snowy mountain valley lined by a mountain range with trees at the base.

Photograph depicts a tree-covered snowy mountain vista.

Photograph depicts a snow-covered plateau flanked by mountain ridges.

Photograph depicts a snowy plateau flanked on both sides by mountain ranges.

Photograph depicts a snowy, brush covered plateau in the foreground with mountain peaks in the background.

Photograph depicts a snowy plateau in the foreground leading to forested foothills and a snow-covered mountain range in the background.