Expert hikers can trek in the upper mountains in the glorious scenery on the Southern Alpi Graie, along the ancient tracks where shepherds, smugglers and guides between Italy and France would exchange and barter. The tour, which covers the wild valleys of all very different aspects, and which crosses the hills that top 3000m height, can be started from Usseglio (for the Rifigio Cibrario) and from Bessans in Haute Maurienne (for the Refuge Avérole)