アメリカ内務省のインスタグラム(usinterior) - 5月19日 04時26分

Today marks the 33rd anniversary of the cataclysmic eruption of Mount St. Helens in #Washington. A magnitude 5+ #earthquake accompanied a massive landslide that uncorked the volcanic plumbing system. This eruption and subsequent research at Mount St. Helens has contributed an immeasurable wealth of information about volcanic processes to the scientific community. Read more about this and other eruptions of Mount St. Helens on the U.S. Geological Survey (a Bureau within the Department of the Interior) here: volcanoes.usgs.gov/volcanoes/st_helens/. Photo: Austin Post #mountsthelens #volcanoes #weather #instacool #instagood #photooftheday #webstagram #bestoftheday #mountains #science #history

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