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The starting zone is where the fracture of an avalanche breaks - the weak point in the snow pack. This can be triggered by weak snow or stress such as windloading, a skier or a machine.
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The track is the section of the slide path where the snow gathers speed and mass.
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Another view of the slide track which covers all the open space between the trees.
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The runout, where the snow decelerates and stops
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A slide on Gothic Mountain. Noice the powder cloud in the center as the snow moves along.
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Another avalanche in progress with a plume of airborn snow as the pressure of the slide produces an air blast.
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Slide running out of the cirque on Gothic Mountain and fanning out in the runout zone.
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Debris from the slide damned the river and crossed to the other side of the valley.
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