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Stopped, waiting for a signal to proceed, this CPR snowplow is about to take on any snowslides that may have come down the mountain from an avalanche control shoot.

Under a low cloud, this train is making a crew change under the shadow of Castle Mountain in Banff national park.

A view most of us never want to see in person. Looking back from the leading locomotive. The sanders are on and you can see the effect on the right of the photo. Taken at 1/50 of a sec.