
Gifford Pinchot National Forest dominates this mid-century topographical study of the Skamania County wilderness. The landscape is defined by the volcanic history of the region, evident in the prominent Lava flows and peaks like West Crater and Trout Creek Hill. Strategic fire lookout and administrative points such as Sunset Guard Station, Lookout Mtn, and Green Lookout Mtn mark the high ridges, overlooking a complex drainage system led by the East Fork Lewis River and Siouxon Creek. Recreational and scientific land use is visible at Government Mineral Springs and the Wind River Experimental Forest, while remote peaks like Calamity Peak and Siouxon Pk indicate the challenging terrain. This era of the forest shows an established network of trails and service roads supporting both timber management and early backcountry tourism.
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1918 · Troutdale
USGS Topo · 1:62,500
1919 · Mount St Helens
USGS Topo · 1:125,000
1926 · Steamboat Mtn
USGS Topo · 1:125,000
1926 · Hood River
USGS Topo · 1:125,000
1929 · Hood River
USGS Topo · 1:125,000
1931 · Steamboat Mtn
USGS Topo · 1:125,000
1934 · Troutdale
USGS Topo · 1:48,000
1940 · Lookout Mtn
USGS Topo · 1:62,500
1941 · Yacolt
USGS Topo · 1:62,500
1941 · Camas
USGS Topo · 1:62,500