Galeas per montes
Galeas per montes (galleys across mountains) is the name given to a feat of military engineering made between December 1438 and April 1439 by the Republic of Venice, when several Venetian ships, including galleys and frigates were transported from the Adriatic Sea to Lake Garda. The operation required towing the ships upstream on the river Adige until Rovereto, then transporting the fleet by land to Torbole, on the Northern shores of the lake. The second leg of the journey was the most remarkable achievement, requiring a land journey 20 km through the Loppio Lake and the narrow Passo San Giovanni.