The
two concrete walls in front of the bunker are nothing to do with the bunker, it's a vehicle inspection pit. A car can drive onto it & servicing the underside can take place. The first door is to the Tobruk, the second to the crew room.
The gun would not fire in the garage bunker but would be drawn out to a firing platform close to the bunker.
H601
StP Kerlohic, Pointe des Renards,
Le Conquet. Re57/58/120/121/122/123