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## By Year

Photography        September 24, 1980        The slopes of Smith Creek valley, east of Mount St. Helens, show tr...

Photography        September 23, 1980        Helicopter stirs ash while trying to land in devastated area

Photography        September 23, 1980        Muddy River bridge destruction from May 18, 1980 Mount St. Helens

Photography        August 21, 1980        Blowdown of trees from the shock-wave of the directed (lateral) bla...

Photography        August 7, 1980        Pyroclastic flow from the Aug. 7, 1980 eruption stretches from Moun...

Photography        July 2, 1980        Mudline left on tree by May 18, 1980 lahars from Mount St. Helens

Photography        April 27, 1980        Bulge on the north side of Mount St. Helens developed as magma push...

Photography        April 9, 1980        Spirit Lake before the big May 18, 1980, eruption of Mount St. Hele...

Photography        April 5, 1980        Steam-blast (phreatic) eruption from the summit crater of Mount St....

Photography        December 31, 1979        Mount St. Helens before May 18, 1980 eruption

Photography        September 28, 1979        Summit region (Kalama age–1479 to 1720 C.E.) of Mount St. Helens lo...

Photography        December 31, 1965        Shoestring Glacier on Mount St. Helens, May, 1965

Photography        December 31, 1964        Mount St. Helens, aerial photograph taken from NE. Sep. 1964.

Photography        December 31, 1905        Horizontal displacement vectors at Mount St. Helens (2008-2014)

Photography        December 31, 1905        Tracking the advance of Crater Glacier at Mount St. Helens, WA

Photography        December 31, 1905        Dome building episode from 2004-2008 at Mount St. Helens can be obs...

Photography        December 31, 1905        Mount St. Helens prior to catastrophic eruption of May 18, 1980. St...

Charts or Graphs        December 31, 2013        Digital Elevation Map of Mount St. Helens with annotation of pre-19...

Photography        October 18, 2013        Maintenance at Acoustic Flow Monitor near Mount St. Helens, WA

Photography        August 6, 2013        Fumerole near Mount St. Helens' 1980-86 dome

Photography        June 25, 2013        Teachers take a guided walk on the Hummocks Trail at Mount St. Helens

Photography        October 21, 2008        Seismologist installing equipment at station NED on Mount St. Helen...

Photography        June 18, 2007        Scientist observing Mount St. Helens' crater and dome

Photography        December 1, 2005        Drumbeat pattern of earthquakes on a webicorder plot (digital seism...

Photography        February 21, 2005        Crater Glacier (cracked surface in center left foreground) and whal...

Photography        January 30, 2005        Aerial view, Mount St. Helens' crater and dome, as seen from NE.

Photography        January 24, 2005        Aerial view, Mount St. Helens' crater and dome

Photography        January 24, 2005        Glacier deformation, east side of Mount St. Helens' dome, as seen f...

Photography        January 23, 2005        Aerial view, Mount St. Helens' crater and dome, as seen from NE. Th...

Photography        January 23, 2005        Vertical view, Mount St. Helens' crater and dome. North is to botto...

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