Secret Underground Command Post II

Deep inside the World War II Harbor Entrance Command Post/Harbor Entrance Observation Post located in the old dynamite battery on Fort Scott.

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The MARS Commander was here too.

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Communications were important to the Harbor Defenses of San Francisco. This telephone frame probably postdates World War II

 

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The air in the HECP/HEOP could be filtered for protection from a gas attack. The piping system is still in tact even if the ceiling is not. The charcoal filters are missing.

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