Moselle. Forbach: Felsenbunker, a vestige of the military past well hidden but perfectly useful to bats

Most visitors pass by without even seeing. The Felsenbunker located on the heights of Creutzberg, close to the Glück Auf chalet in the Forbach State Forest, is hidden by vegetation. The former military structure, which served as a depot of ammunition and shelter for families of Stiring-Wendel during the liberation struggles, is now helping to preserve biodiversity.