|The exterior concrete facade of the (new) Mine Casemate, added in 1942 for protection against enemy fire and gas attacks.|
|Gas warning markings on the interior doorway.|
|The interior of the Engine Room, the first room entered from the airlock chamber.|
|What is left of the latrine. All of the wooden floors have collapsed.|
|The Operating Room, or command center. Left side.|
|The Operating Room, right side.
In this room would have been the communications, plotting boards, and controls for the harbor mines.
|The Dormitory Room, or quarters, for the men stationed here.|
|An exit doorway from the Dorm Room into the interstitial space.|
|The interstitial space between the mine casemate proper, and the outer shock-proof walls.
Shown are the ventilation shafts from the Engine Room to an airstack vent outside above the casemate.