These low walls were built during the 19th century to set the borders for the mountain pastures purchased by well-off owners from Collonges or as dividers between the forest and the mountain pastures (at the time, herds were not allowed to wander into the woods). Today, these walls are home to a particular variety of fauna. Reptiles, birds and mustelids alike are attracted to these structures (excerpt from the booklet: “Au fil de l’alpage” or “Through the alpine pasture”).