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1980 Map of Twain

Name: 1980 Topographic Map of Twain
Creator: U.S. Geological Survey
Published: 1980
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1980

About this map

Seneca and the remote mining reaches of Plumas National Forest define this 1980 study of the Feather River canyon. The landscape is a complex network of resource extraction and transit, where the Western Pacific railroad tracks parallel the North Fork Feather River and the East Branch North Fork Feather River. Gold mining history is deeply etched into the terrain, evidenced by numerous workings such as the Dutch Hill Mine, Virgilia Mine, and the Swiss Mine.

Along the riverbanks, small settlements and transit points like Twain, Virgilia, and Paxton Siding mark the thin corridor of human activity within the steep canyons. The presence of Tailings and features like Tunnel No 26 illustrate the engineering challenges of both mining and railroading in this region. Genealogists may find particular value in the Big Flat Cem and named locations like Perini Place, which anchor family histories to specific mountain flats and river bars.