
Iron Mountain Ridge and Baltica Ridge dominate this rugged section of the Eldorado National Forest, where high-elevation logging and mining operations defined the local economy in the early 1950s. Multiple historical industry sites are documented, including the Girard Mill Site, Plum Creek Mill Site, and Tuman Mill Site. These industrial remnants, alongside the Robert Lee Mine and Twin Pines Mine, indicate a landscape heavily utilized for its natural resources.
57 named features on this map. Tap any name to fly to it.
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9 editions found
1889 · Pyramid Peak
USGS Topo · 1:125,000
1891 · Placerville
USGS Topo · 1:125,000
1891 · Pyramid Peak
USGS Topo · 1:125,000
1892 · Placerville
USGS Topo · 1:125,000
1893 · Placerville
USGS Topo · 1:125,000
1895 · Pyramid Peak
USGS Topo · 1:125,000
1896 · Pyramid Peak
USGS Topo · 1:125,000
1947 · Sacramento
USGS Topo · 1:250,000
1948 · Sacramento
USGS Topo · 1:250,000
1950 · Riverton
USGS Topo · 1:24,000