The Needle Mountains and Grenadier Range dominate this high-altitude landscape, where numerous peaks over 13,000 feet are identified simply by number, such as Needle Mountains Peak One through Needle Mountains Peak Nine. This 2011 survey documents a concentrated pocket of historic mining activity near Hunchback Pass, featuring the Little May Mine, Gold Bug Mine, Golden Shear Group Mine, and Good Hope Mine. This mining cluster suggests early 20th-century exploration near the headwaters of Bear Creek. The terrain is characterized by alpine hydrology, with dozens of high-elevation water bodies like Vallecito Lake, Leviathan Lake, and Balsam Lake feeding complex drainage systems including Vallecito Creek and Tenmile Creek. Prominent landmarks such as The Guardian and Gray Needle serve as distinct navigational points within this complex topography.
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This is the sole edition of this map. No revisions or reprints were ever made.
1897 · Silverton
USGS Topo · 1:62,500
1900 · Needle Mountains
USGS Topo · 1:62,500
1901 · Silverton
USGS Topo · 1:62,500
1902 · Needle Mountains
USGS Topo · 1:62,500
1902 · Silverton
USGS Topo · 1:62,500
1905 · San Cristobal
USGS Topo · 1:125,000
1907 · San Cristobal
USGS Topo · 1:125,000
1945 · Durango
USGS Topo · 1:250,000
1953 · Durango
USGS Topo · 1:250,000
1954 · Durango
USGS Topo · 1:250,000