A rotary turret type Galopin for two guns calibre 75 mm. Behind it you can see dark outline of fortress's caserne.

Photo by 
M. Dubanek 1998.

A small observation dome type Digoin and behind it a rotary cupola for MG.

Photo by
M. Dubanek 1998.

A plan of the Froideterre fortress after modernization.

Drawn by
Jan Pavel 2001.