Real video footage of Mt St Helen's eruption 40 years ago!

The eruption caused by mount St Helens shook the world, creating a significant local and worldwide chaos. It was 40 years ago that Mt St Helens erupted creating a permanent change in the local landscape.

Although the volcano has erupted several times since there has been no eruption from Mt St Helens that compares to the unforgettable eruption that took place in 1980.

Here is a video showing real footage of the day that lead to the enormous eruption expelled from the volcano Mt St Helens.