The primary focus of this excellent interactive site on the Mount. St. Helens' 1980 eruption is for users to decide how to plan for evacuation when a volcanic eruption is imminent. Examine volcanic deposits from prior eruptions, see an interesting time-lapse video of the eruption alongside a cross-section of the volcano showing what was happening inside the mountain, and find out what the actual area affected by the eruption. As you go step by step through the scenarios, there are questions posed for you to consider for potential evacuation plans.
courtesy of Knovation
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