The Plaine Valley has kept many traces of the first worldwide conflict hidden in the mountain side.
The study of the mountain war is possible thanks to this remembrance site. This area is where a zeppelin has been shot down for the first time because of war and where the greater depth has been reached in the underground war. The Chevrot tunnel in Col de la Chapelotte reaches a depth of 120 metres!
Discover outstanding vestiges of the German and French rear fronts with a passionate guide!
On either side of the front, real factories have been set up for this underground war in order to supply air and electricity to tunnels.
You can also discover a fountain made by French soldiers; a chapel built by the Cartier Bresson family, rocks of “Pierre à Cheval”, the grotto of WWI French soldiers and path of rocks.