
Mount St Helens National Volcanic Monument and the Gifford Pinchot National Forest dominate this landscape, which was captured shortly after the 1980 eruption. The terrain reflects a period of massive geological transformation, with extensive areas of blowdown and mudflow recorded throughout the drainage basins of the North Fork Toutle River and Castle Creek. These features illustrate the raw impact of the volcanic event on the local topography and timber.
23 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1919 · Mount St Helens
USGS Topo · 1:125,000
1953 · Hoquiam
USGS Topo · 1:250,000
1953 · Cougar
USGS Topo · 1:62,500
1953 · Elk Rock
USGS Topo · 1:62,500
1957 · Hoquiam
USGS Topo · 1:250,000
1957 · Spirit Lake
USGS Topo · 1:62,500
1958 · Mt St. Helens
USGS Topo · 1:62,500
1958 · Hoquiam
USGS Topo · 1:250,000
1962 · Hoquiam
USGS Topo · 1:250,000
1975 · Spirit Lake SW
USGS Topo · 1:24,000