The Graian Alps (French: Alpes grées [alp ɡʁe]; Italian: Alpi Graie [ˈalpi ˈɡraːje]) are a mountain range in the western part of the Alps.
The name Graie comes from the Graioceli Celtic tribe, which dwelled in the area surrounding the Mont Cenis pass and the Viù valley.[1]Other sources claim that the name comes from the Celtic "Graig" meaning rock/stone, literally the Rocky Mountains[2]
The Graian Alps are located in France (Auvergne-Rhône-Alpes), Italy (Piedmont and the Aosta Valley), and Switzerland (western Valais).
The French side of the Graian Alps is drained by the river Isère (Tarentaise valley) and its tributary Arc (Maurienne valley), and by the Arve. The Italian side is drained by the rivers Dora Riparia, Dora Baltea, Orco and Stura di Lanzo, tributaries of the Po.
The main passes of the Graian Alps are shown in the table below. The group in which the pass is located is indicated with "MB" for Mont Blanc group, "C" for Central group, "E" for Eastern group, and "W" for Western group.
The western group contains the Vanoise National Park, established in 1972 and covering 1,250 km2 (480 sq mi)[4] the eastern group contains the Gran Paradiso National Park, the oldest Italian national park.[5]Also on the Italian side is located the Parco Regionale del Monte Avic, a nature park of 5,747 ha established by Regione Valle d'Aosta.[6]