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1993 Map of The Geysers

Name: 1993 Topographic Map of The Geysers
Creator: U.S. Geological Survey
Published: 1993
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1993

About this map

The Mayacmas Mountains define this industrial and geothermal landscape, where the extraction of earth's energy is mapped alongside its mineral history. Numerous Geothermal Wells and several Power Plants are scattered across the terrain, indicating the intensive development of the area's natural steam resources. These modern facilities operate in the shadow of older industrial sites like the Silver Bear Mine, Buckeye Mine, and Socrates Mine, showing the transition from traditional mining to energy production.

Small settlements such as Mercuryville and Binkley Ranch provide context for local residency amongst the ridges of Geyser Peak and Mahnke Peak. The map documents a complex network of 4WD tracks and fire trails, including the Rattlesnake Fire Trail, providing access through the steep canyons carved by Big Sulphur Creek and Little Sulphur Creek. The intersection of Lake, Sonoma, and Mendocino counties occurs here, marking a rugged frontier where resource management is the primary human footprint.