Advantage was taken of the extensive road tunnels and caves available in northern Italy. Work on parts for the Me262 turbojet fighter continued in the first months of 1945 in tunnels around Bolzano; the Fiat works moved production to a stretch of tunnel between Riva and Gargnano on the coast of Lake Garda, where 1,300 laborers continued to work until April of that year; Caproni produced parts for the V-weapons and the Me262 in a hydraulic tunnel between the River Adige and Garda. Of the twenty-eight sites chosen for underground dispersal, only ten actually reached the stage of production.
