
The ruins near the pass mark the site of the Fenestrelle shelter, named for Lieutenant Angelo Bertolotti. Built in 1888 and in use until the Second World War, it could house a garrison of 10 on straw pallets. In their guidebook, entitled "La Valle Gesso", the Boggias indicate the shelter as being instead dedicated "to the memory of Angelo Bortolo, of the 1∞ Reg. of the Alpine Corps, who was killed on the Ortigara during the First World War".