
Las Trampas Ridge and Rocky Ridge dominate this topography, creating a dramatic natural corridor between the expanding suburbs of the East Bay. The map captures the meeting of natural preservation and residential growth in the mid-1990s, with St Marys College and Rheem Valley marking the western edge while Alamo and Danville sit in the valley to the east.
51 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.
1896 · Mt. Diablo
USGS Topo · 1:62,500
1897 · Concord
USGS Topo · 1:62,500
1898 · Mt. Diablo
USGS Topo · 1:62,500
1899 · Haywards
USGS Topo · 1:62,500
1906 · Pleasanton
USGS Topo · 1:62,500
1915 · Haywards
USGS Topo · 1:62,500
1915 · Concord
USGS Topo · 1:62,500
1941 · Pleasanton
USGS Topo · 1:62,500
1942 · Concord
USGS Topo · 1:62,500
1942 · Hayward
USGS Topo · 1:62,500