A film about men who have one of the toughest jobs in the world - to maintain the line of the Canadian Pacific Railway during the heaviest snowfalls of winter in the Rockies. In summer the track winds through a majestic mountain panorama, but winter brings the constant threat of blizzards and choking snow.
The train crews, maintenance men, and telegraph operators who live in the isolated part of British Columbia are involved in a constant battle with the elements to keep the line open.
A National Film Board of Canada film