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Album caption: Aerial view of pit left after explosive eruption of July 22. Pyroclastic flows overrode low crater rim in foreground and moved downslope toward Spirit Lake, (north) of Mount St. Helens. Skamania County, Washington. July 24, 1980. (Photo by S. Lowther and A. Post) Published as figure 28 in U.S. Geological Survey. Professional paper 1250. 1981. Index card unavailable.
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Album caption: Aerial view looking south-southeast. A portion of the devastated area in the vicinity of Mount St. Helens characterized by very little surviving vegetation, with most trees uprooted or broken off; a blanket of ash in many places; valleys partly filled by debris-avalanche material; lakes formed where debris avalanche has dammed tributary valleys. Crater of volcano visible in background. Skamania County, Washington. June 30, 1980. (Photo no. 80S7-009 by S. Lowther and A. Post) Published as figure 26 in U.S. Geological Survey. Professional paper 1250. 1981. Index card unavailable.
    map background search result map search result map Aerial view of Mount St. Helens looking south-southeast. Skamania County, Washington. 1980. Aerial view of pit left after explosive eruption of July 22, Mount St. Helens. Skamania County, Washington. 1980. Aerial view of Mount St. Helens looking south-southeast. Skamania County, Washington. 1980. Aerial view of pit left after explosive eruption of July 22, Mount St. Helens. Skamania County, Washington. 1980.