
Six Rivers National Forest dominates this landscape in southern Trinity County, defined by its steep peaks and the winding course of the Eel River. The 1990s terrain is marked by remote ranching outposts and infrastructure, including the Lake Mountain Landing Strip and several high-elevation corrals such as Lone Pine Corrals and Pepperwood Corrals. The Northwestern Pacific railroad corridor follows the river's path, cutting through the southwestern corner near Island Mountain, where a notable Tunnel and several Mines suggest the historical industrial activity of the canyon.
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This is the sole edition of this map. No revisions or reprints were ever made.
1920 · Cummings
USGS Topo · 1:62,500
1920 · Covelo
USGS Topo · 1:62,500
1920 · Harris
USGS Topo · 1:62,500
1921 · Hoaglin
USGS Topo · 1:62,500
1922 · Island Mountain
USGS Topo · 1:62,500
1931 · Hoaglin
USGS Topo · 1:96,000
1935 · Hoaglin
USGS Topo · 1:125,000
1949 · Alderpoint
USGS Topo · 1:62,500
1951 · Alderpoint
USGS Topo · 1:62,500
1952 · Spyrock
USGS Topo · 1:62,500