Ouvrage de Immerhof
The entrance block has a switchable 4.7 cm gun - Reibel position, two GFM cupolas for observation and close combat, a turret for grenade launchers and several close combat weapons.
A machine gun protects the entrance.
Block 3 seen sideways.
There is a turret for 81 mm mortar and a cupola for observation.
Block 1 and 2 are identical and are linked together.
Each block has a turret for heavy Mg and two cupolas for Mg.
One Mg cupola of each block lies on a lower level.
The second one is on top.
Both blocks taken in one shot.