historicaltimes: The eruption of Mount St. Helens on May 18, 1980. It was the only significant volca
historicaltimes: The eruption of Mount St. Helens on May 18, 1980. It was the only significant volcanic eruption to occur in the contiguous 48 U.S. states since the 1915 eruption of Lassen Peak in California. However, it has often been declared as the most disastrous volcanic eruption in U.S. history. via reddit -- source link