"Mount Saint Helens as viewed from the west side (looking up the South Fork of the Toutle River Valley). In this photo taken on March 25, 1980, just two days before the first visible volcanic activity, the mountain looks completely serene. Mount Saint Helens is the youngest of the major Cascade volcanoes. Comparatively recent volcanism has not given the mountain's smooth symmetrical slopes time to develop deep erosional scars." (U.S. Dept. Of Commerce, 1980, p. 3)
Mount St. Helens
Photo: Courtesy of NGDC/NOAA.
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