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Earthquake Landslide
Is any distance away from a volcano safe? Find out when an earthquake causes one of the largest landslides in recorded history on Mount St. Helens.
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Raging Planet:   Earthquake Landslide
Is any distance away from a volcano safe? Find out when an earthquake causes one of the largest landslides in recorded history on Mount St. Helens.
Aired: 3/14/11
Views: 25954
Network:  Discovery
 
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