Mercuryville and the industrial-residential complex of Buckman Mines Housing Unit Number Two define this portion of the Mayacamas Mountains during the early 21st century. The landscape is a network of geothermal activity and mining history, centered around The Geysers and the steep walls of Geyser Canyon. While the area is known for energy production, the map also identifies a legacy of recreation and rural landholding, including the Geysers Resort and several prominent family operations such as the Caldwell Ranch and Binkley Ranch. High elevations like Mahnke Peak and Geyser Peak provide the backdrop for a rugged topography drained by the Big Sulphur Cr and Little Sulphur Cr. The presence of Glenbrook and its associated Glenbrook Resort in the northeast suggests the area's dual identity as both a resource extraction hub and a destination for visitors drawn to the regional springs.
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This is the sole edition of this map. No revisions or reprints were ever made.
1920 · Healdsburg
USGS Topo · 1:62,500
1921 · Kelseyville
USGS Topo · 1:62,500
1927 · Calistoga
USGS Topo · 1:62,500
1933 · Healdsburg
USGS Topo · 1:48,000
1940 · Healdsburg
USGS Topo · 1:62,500
1943 · Calistoga
USGS Topo · 1:62,500
1943 · Kelseyville
USGS Topo · 1:62,500
1945 · Calistoga
USGS Topo · 1:62,500
1945 · Lower Lake
USGS Topo · 1:62,500
1947 · Santa Rosa
USGS Topo · 1:250,000