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Experts explain Scotland's killer avalanches

11 December 2013 Last updated at 15:06 GMT

Why did avalanches cause so many deaths and accidents in the Scottish mountains last winter?

Experts say changes in weather patterns led to conditions in the hills that had not been seen for decades.

The snow and ice attracted high numbers of skiers and climbers into the great outdoors.

Watch One Wild Winter in the Scottish Mountains on BBC One Scotland at 21:00 GMT.

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