
The Naval Oil Shale Reserve dominates this high-altitude landscape in Western Colorado, where the deeply incised canyons of the Roan Plateau converge. At the time of this 1925 survey, industrial activity focused on early shale extraction, evidenced by the Columbia Shale Camp and Washington Shale Camp situated in the drainage basins. These remote camps and the Granlee School suggest a temporary but established community centered around resource exploration during the interwar period.
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1906 · Grand Hogback
USGS Topo · 1:125,000
1910 · Grand Hogback
USGS Topo · 1:125,000
1927 · Parachute Creek
USGS Topo · 1:62,500
1929 · Grand Valley
USGS Topo · 1:62,500
1929 · Highmore
USGS Topo · 1:62,500
1929 · Roan Creek
USGS Topo · 1:62,500
1952 · Rio Blanco
USGS Topo · 1:24,000
1952 · Anvil Points
USGS Topo · 1:24,000
1952 · Rock School
USGS Topo · 1:24,000
1952 · Jessup Gulch
USGS Topo · 1:24,000