
The high, ridged divide between Mendocino and Sonoma counties defines this 1991 survey, a landscape of isolated peaks and deep drainage networks. Human presence is concentrated around the small settlement of Billings in the northwest and Howlett Ranch near Horsethief Canyon, where the rugged topography has largely dictated the pattern of ranching and remote settlement.
26 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.
1921 · Skaggs
USGS Topo · 1:62,500
1921 · Plantation
USGS Topo · 1:62,500
1938 · Hopland
USGS Topo · 1:62,500
1943 · Tombs Creek
USGS Topo · 1:24,000
1943 · Stewarts Point
USGS Topo · 1:24,000
1943 · Annapolis
USGS Topo · 1:24,000
1943 · Hopland
USGS Topo · 1:62,500
1943 · Ornbaun
USGS Topo · 1:62,500
1944 · Annapolis
USGS Topo · 1:31,680
1944 · Stewarts Point
USGS Topo · 1:31,680