Everything was calm in beautiful Skamania County, Washington, until May 18, 1980. Then, a massive stratovolcano unleashed its rage, obliterating 230 square miles around it. It was Mount St. Helens. This video show how things have changed since then.

1.5 million metric tons of sulfur dioxide were released during the largest known avalanche in history, resulting in 57 casualties and a dramatic landscape change. From the Garden of Eden to the Plains of Hell in a few minutes. It has taken thirty years, as these images from the Landsat satellites show, to get a closer to its original state.