Dom bunker for railroadgun 28 cm K5
The railwaybattery E 712 had two guns of type K 5. One was in this Dombunker which is in a stone quarry with German designation Stp Bismarck.
Later one more tunnels were made and two guns and the two guns K 12 (21 cm) of the E-Batterie 701 found a new loction here.