2021 Map of Four Corners Rock
USGS Topo · Published 2021About this map
Six Rivers National Forest and Mendocino National Forest meet in this 2021 study of Trinity County terrain, where the Mad River cuts through a landscape defined by significant ridges and rock formations. The presence of Red Mountain Field suggests localized resource extraction, while named peaks such as Four Corners Rock, Washington Rock, and Mikes Rock serve as primary landmarks along the northern drainage of Trout Cr.
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Map Details
Editions of this 2021 Four Corners Rock Map
This is the sole edition of this map. No revisions or reprints were ever made.
Other maps of this area
1920 · Covelo
USGS Topo · 1:62,500
1921 · Hoaglin
USGS Topo · 1:62,500
1922 · Island Mountain
USGS Topo · 1:62,500
1926 · Covelo
USGS Topo · 1:62,500
1931 · Hoaglin
USGS Topo · 1:96,000
1935 · Hoaglin
USGS Topo · 1:125,000
1952 · Spyrock
USGS Topo · 1:62,500
1952 · Covelo
USGS Topo · 1:62,500
1953 · Blackrock Mtn
USGS Topo · 1:62,500
1954 · Blackrock Mtn
USGS Topo · 1:62,500