Trekking The Giant's Trail: Alta Via 1Italy's Alta Via 1, a 180km trail through the Italian Alps following the northern flank of the Aosta Valley, boasts magnificent views of the Alpine giants: Mont Blanc, the Matterhorn, the Grand Combin and Monte Rosa. Indeed, it is sometimes known as the Giants' Trail and can be combined with a sister route, the Alta Via 2 (covered in a separate Cicerone guide), which runs along the southern flank of the valley, to form the Tor des Geants. Stretching