9. Adige-Garda tunnel
Just south of Torbole the opening of the Adige-Garda tunnel can be seen, where the factories of the aviation enterprise Caproni had been transferred to escape Allied bombing, similar to what had happened with the factories of FIAT, BREDA and others which had been relocated to 70 tunnels on the western Gardesana road. The Adige-Garda tunnel had been designed as a drainage canal to, if necessary, divert the waters of the Adige river into Lake Garda (from the water intake at Mori) in order to prevent previously recurrent catastrophic floods in the Polesine area.
At the outbreak of war the excavation, originally begun in 1939, was interrupted. By then the shaft was two kilometers deep. In late spring in 1944, after adapting the tunnel to industrial requirements, Caproni enterprises, who could count on 1,300 employees, including workers and technicians housed in shacks at Linfano, was ready to start working in accordance with Messerschmitt production schedules.In Torbole Caproni produced support support equipment for fighter aircrafts (Me 163, Me 262), for the flying bomb "V 1", the missile "V 2", and other similar but more modern missiles.