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Twin Peaks Tunnel Feb 7, 1917

West Portal Tunnel under construction. [West Portal Entrance looking to Portola dpwbook18 dpw4018]
DPW Horace Chaffee (SF Department of Public Works / Courtesy of a Private Collector)

Twin Peaks Tunnel Twin Peaks Tunnel

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Western Neighborhoods Project - wnp36.01461
Keywords: outsidelands dpw tunnel construction
Neighborhoods: West Portal
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