Path of the Defensionmauer
The “Defensionmauer” was the defensive wall built before WWI in the area of Sperone against possible attacks by the Italian infantry and was armed with machine guns.
The path to reach the first trenches is easy but a little bit exposed; there are a big embrasure excavated in the rock, the entrance of a gallery (be careful and have a torch if you visit it) and all around trenches and rock walls.
After that, starts the Defensionmauer, a trail digged in the mountain side and if necessary covered by concrete to hide it from the enemy. The several openings allowed the Austrian to dominate the valley and fire the Italians on the other mountain side.