Bunker
A bunker was a type of defensive structure intended to protect their content from attack.

On Earth, bunkers were used as early as the Second World War. In a holographic simulation, American forces attacked a German bunker. () 

The Borg Cooperative was centered in a bunker. ()

The Siege of AR-558 revolved around the protection of a communications bunker in the Chin'toka system. () Also during that war, the Tevak shipyards had its dilithium storage bunkers destroyed. ()

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de: Bunker
Architecture