Valle d'Aosta Region
- Area: 3,260 km㎢
- Population: about 125,000 inhabitants in 2018
- Car Plate: AO
- Communes: 74 communes
- Official website: www.regione.vda.it
The upper Val d'Aosta is the traditional southern starting-point for the tracks, then transformed into roads, which led over the Alpine passes. The road through the Great St Bernard Pass (or today the Great St Bernard Tunnel) leads to Martigny, Valais, and the one through the Little St Bernard Pass to Bourg-Saint-Maurice, Savoie. Today Aosta is joined to Chamonix in France by the Mont Blanc Tunnel, a road tunnel on E25 running underneath the Alps.