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1950 Map of Tunnel Hill

Name: 1950 Topographic Map of Tunnel Hill
Creator: U.S. Geological Survey
Published: 1958
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1958

About this map

Georgetown Divide defines the upper reaches of El Dorado County, where the rugged topography is marked by a legacy of resource extraction and forestry. During the mid-twentieth century, this landscape was a complex network of active and legacy mines, including the Kenna Mine, Bedrock Mine, and Bluebird Mine. The presence of a Sawmill and the Blodgett Experimental Forest underscores the era's focus on timber management. The map details the winding course of the Rubicon River as it carves through deep canyons, with local habitation represented by small outposts like Edison Cabin and Bacchi Ranch.

Strategic points like Bald Mtn Lookout provided vital surveillance over the heavily forested terrain. Transportation and water management are evidenced by the local Flume and segments of the Georgetown Divide road. For genealogists and historians, the inclusion of a lone Cem and named flats such as Squaw Flat and Buckeye Flat offer clues to the early settlement patterns of this gold country region.