Alto Tunnel (Mill Valley, California)

USA / California / Corte Madera / Mill Valley, California
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Railroad tunnel. 2,172ft long tunnel bored through Corte Madera Hill, opened in 1884 and usage ceased in 1971. Plugged at both ends in 1979.
Nearby cities:
Coordinates:   37°55'1"N   122°31'31"W
This article was last modified 11 years ago