
Mount Saint Helens National Volcanic Monument and the Gifford Pinchot National Forest converge on this landscape, shaped by dramatic geology and the flow of the Lewis River. The southern slopes of the volcano are marked by unique subterranean features including the Lower Ape Cave Passage and the Ape Cave Trl, while the surface is defined by Lava Canyon and prominent heights such as Cinnamon Peak and Mt Mitchell.
35 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
1940 · Lookout Mtn
USGS Topo · 1:62,500
1941 · Yacolt
USGS Topo · 1:62,500
1948 · Vancouver
USGS Topo · 1:250,000
1950 · Vancouver
USGS Topo · 1:250,000
1950 · Vancouver
USGS Topo · 1:250,000
1953 · Hoquiam
USGS Topo · 1:250,000
1953 · Lookout Mtn
USGS Topo · 1:62,500
1953 · Cougar
USGS Topo · 1:62,500
1956 · Yacolt
USGS Topo · 1:62,500