The deep gorge of the Fraser River, shadowed by the mountain ranges of British Columbia, is a highway for the mysterious migration of the Pacific salmon. The river shallows appear red with the flailing fish as they push up-river to spawn and die. A natural wonder puzzling to the scientist, the fish migration of spring and summer provides renewed activity for fisherman and cannery worker. Projects of the International Commission to clear or bypass obstructions in the river bed are shown.
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