Mount St. Helens, Washington (© Diane Cook and Len Jenshel/Getty Images)

【May 18 2015】On a quiet Sunday morning 35 years ago today, Mount St. Helens erupted in a two-part spectacle of geologic fury. The Cascade peak in southwest Washington State had been dormant since the 1850s, but in March 1980, small earthquakes and steam-vent eruptions signaled to geologists that the sleeping giant might be waking.Explore breathtaking Gallery from the HuluTrip homepage over the past 5 years..