The Eruption of Mount St. Helens Documentary Mins :52 Documentary Year Released:2017 2017-12-07 In 1980, Mount St. Helens erupted and has since been declared as the most disastrous volcanic eruption in United States history. Footage of the eruption’s aftermath is showcased in this fascinating documentary. Watch on Amazon Previous articleOctober 22, 2017Next articleLearning Shapes Oval, Circle, Triangle with Play Doh Rainbow Cake