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map background search result map search result map Aerial view of Toutle River debris flow and tributary. Mount St. Helens, Cowlitz County, Washington. 1980. Aerial view of Toutle River debris flow. Mount St. Helens, Cowlitz County, Washington. 1980. Aerial view of west end of Toutle River debris flow. Mount St. Helens, Cowlitz County, Washington. 1980. Aerial view of Ape Canyon and southeast side of Mount Saint Helens. Skamania County, Washington. 1980. Aerial view of glacier and crevasses on southeast rim of  Mount Saint Helens. Skamania County, Washington. 1980. Aerial view of outer limit of blast area. Mount St. Helens, Washington. 1980. Aerial view of pyroclastic flows on ramp  north of crater. Mount St. Helens, Skamania County, Washington. 1980. Fine ash along margin of August 7 pyroclastic flow. Mount St. Helens, Skamania County, Washington. 1980. Levee at margin of August 7 pyroclastic flow. Mount St. Helens, Skamania County, Washington. 1980. Breadcrust block from July 22nd pyroclastic flow. Mount St. Helens, Skamania County, Washington. 1980. July 22 and August 7 pyroclastic flow deposits on June 12 (medium gray) pyroclastic flow deposits. Mount St. Helens, Skamania County, Washington. 1980. Mel A. Kuntz crossing surface of Jul 22 pyroclastic flow deposit. Mount St. Helens, Skamania County, Washington. 1980. Margin of July 22 pyroclastic flow deposit on May 18 pyroclastic deposit. Mount St. Helens, Skamania County, Washington. 1980. Aerial view of Toutle River debris flow and tributary. Mount St. Helens, Cowlitz County, Washington. 1980. Aerial view of Toutle River debris flow. Mount St. Helens, Cowlitz County, Washington. 1980. Aerial view of west end of Toutle River debris flow. Mount St. Helens, Cowlitz County, Washington. 1980. Aerial view of Ape Canyon and southeast side of Mount Saint Helens. Skamania County, Washington. 1980. Aerial view of glacier and crevasses on southeast rim of  Mount Saint Helens. Skamania County, Washington. 1980. Aerial view of pyroclastic flows on ramp  north of crater. Mount St. Helens, Skamania County, Washington. 1980. Fine ash along margin of August 7 pyroclastic flow. Mount St. Helens, Skamania County, Washington. 1980. Levee at margin of August 7 pyroclastic flow. Mount St. Helens, Skamania County, Washington. 1980. Breadcrust block from July 22nd pyroclastic flow. Mount St. Helens, Skamania County, Washington. 1980. July 22 and August 7 pyroclastic flow deposits on June 12 (medium gray) pyroclastic flow deposits. Mount St. Helens, Skamania County, Washington. 1980. Mel A. Kuntz crossing surface of Jul 22 pyroclastic flow deposit. Mount St. Helens, Skamania County, Washington. 1980. Margin of July 22 pyroclastic flow deposit on May 18 pyroclastic deposit. Mount St. Helens, Skamania County, Washington. 1980. Aerial view of outer limit of blast area. Mount St. Helens, Washington. 1980.