
Graysill Mine and the Spanish King No 1 Mine reflect the extraction history of this corner of the San Juan National Forest, where the high-altitude terrain is defined by the Rico Mountains and Graysyll Mountain. This 1960 field-checked survey highlights a complex network of headwaters including the Dolores River and Hermosa Creek, which originate near the convergence of four county boundaries: Dolores, San Juan, La Plata, and Montezuma.
35 named features on this map. Tap any name to fly to it.
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4 editions found
1897 · Rico
USGS Topo · 1:62,500
1897 · Telluride
USGS Topo · 1:62,500
1898 · Engineer Mountain
USGS Topo · 1:62,500
1898 · Rico
USGS Topo · 1:62,500
1899 · Rico
USGS Topo · 1:62,500
1900 · Engineer Mountain
USGS Topo · 1:62,500
1904 · Telluride
USGS Topo · 1:62,500
1908 · Engineer Mountain
USGS Topo · 1:62,500
1945 · Durango
USGS Topo · 1:250,000
1953 · Mount Wilson
USGS Topo · 1:24,000