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1956 Map of New Idria, 1958 Print
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1956 Map of New Idria

USGS Topo · Published 1958

About this map

The cinnabar-rich hills of the Diablo Range dominate this mid-century survey, centered on the mining operations at New Idria (Idria PO). The landscape is a network of mercury and mineral extractions, featuring significant sites like the Florence Mack Mine and the Santa Margarita Mine near the headwaters of the San Benito River. The topography rises steeply to San Benito Mtn, reflecting the geological complexity of an area defined by mineral exploration and high-elevation ranching.

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Map Details

Date Portrayed1956
Date Published1958
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:62,500
Physical Dimensions16.6 x 20.8 inches

Editions of this 1956 New Idria Map

Historical Maps of Idria Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain