At one stage the fort's magazine was hit and a store of 90mm shells was exploded. The siege was lifted at 2 am on 13 September and the Germans withdrew. The fort remained a few miles behind the French front lines for the rest of the War. The barrack area is only partially complete, and the semi-circular gun battery which guards the Meuse has been penetrated by large calibre shells. Ingrid first gave us a thorough tour of the superstructure, including the barracks which include staircases, washrooms, a bakery, and some surviving turrets for observation.
Tunnels lead out to the infantry positions which are narrow slits which overlook the dry moat.
There is a fine powder magazine. We then moved down to the underground levels which are complete and most impressive. The defenders had dug down below the original underground level, and we were told that there are approximately 3km of tunnels in the bedrock. These tunnels were sometimes lined with massive timber joists, but were usually just rough stone. We followed one tunnel which led down and several hundred yards west.