Discovery Channel - Raging Planet (2009) Part 4 Avalanches

Raging Planet is a spectacular weather and geology series built around a backbone of fascinating science. Covering dramatic weather in high definition, Raging Planet brings you up-close and personal to lightning, volcanoes, floods, avalanches, hurricanes, tornadoes, blizzards and sea storms.

Part 4: Avalanches

Witness the devastating power of an avalanche, from cameras placed directly in the path of descending snow. Stunning special effects recreate the unimaginable horror of the worst avalanche disaster in US history.

Raging Planet (Wikipedia)

Episode One Preview Shown Here.