Yesterday, bike-based exploration organized by a friend: A ferry ride to Vallejo, an exploration of the fascinating mostly abandoned naval base and nature preserve on Mare Island, a ride through Benicia and across a bridge to Martinez, and then back to BART.

Briefly, in photos:

A massive boat-building drydock, abandoned. This photo doesn’t do it justice:

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Old buildings and railroad tracks:

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Many, many buildings had this stencil:

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Normally I tune out the California Prop 65 “this site may contain hazardous chemicals” signs you see at every gas station and commercial warehouse. But this one’s a little different…

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Park of unexplained rockets / missiles:

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For sale in the visitor center: homemade jam, and ammo boxes.

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Later, crossing into Benicia:

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