
Mining operations and high-altitude transport networks define this portion of the San Miguel and Dolores River watersheds in the early 1950s. The industry-heavy landscape is evidenced by the Butterfly Mine (Active) and the San Bernardo Mine, alongside several sites already noted as inactive, such as the Coal Mine (Aban'd) and an Aerial Tramway (Aban'd) near Silver Pick Basin. These extraction points are connected by the winding route of the Rio Grande Southern Railroad, which navigates the steep grades near Lizard Head Pass.
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8 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