Cobb Mountain and the surrounding volcanic terrain of Lake County define this landscape, where natural thermal features gave rise to a network of historic resorts and small communities. The map highlights a long tradition of mountain retreats, from the cluster of settlements at Whispering Pines, Hobergs, and Loch Lomond to the specialized enclaves of Ettawa Springs and Harbin Springs. These locations represent a unique recreational geography centered on the area's mineral springs and high-elevation climate.
85 named features on this map. Tap any name to fly to it.
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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