Il The Fortress of Punta Corbin was built between the years of 1906-1911 on the northern top of the plateau of Mount Cengio to dominate Val d'Astico and the gorge of Assa at 1096 m, and acting as a barrier for any movement of the Austrians advancing into the valley. In May 1916, the fort was conquered by the Austrian offensive of the highlands. Only on 24th June 1916 it went back into the Italian hands.