
The northern slopes of the Mount Diablo massif dominate this landscape, where early 1950s ranching and mining terrain met the growing footprint of Clayton. The map documents a transition from the industrial activity at the Quarry near Cowell and the Mt Diablo Mine to the protected expanse of Mt Diablo State Park. High-altitude landmarks like the Mt Diablo Observation Tower, North Peak, and Eagle Peak provide a clear view of the complex drainage system, including Donner Creek and Marsh Creek, that carves through the foothills.
69 named features on this map. Tap any name to fly to it.
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9 editions found
1896 · Carquinez Strait
USGS Topo · 1:62,500
1896 · Mt. Diablo
USGS Topo · 1:62,500
1897 · Concord
USGS Topo · 1:62,500
1898 · Karquines
USGS Topo · 1:62,500
1898 · Mt. Diablo
USGS Topo · 1:62,500
1901 · Karquines
USGS Topo · 1:62,500
1902 · Napa
USGS Topo · 1:125,000
1907 · Antioch
USGS Topo · 1:62,500
1908 · Antioch
USGS Topo · 1:62,500
1915 · Concord
USGS Topo · 1:62,500