From Gimillan, up to the right and among the pastures. The path enters the Grauson gorge and it goes down to the bridge; then, it reaches the Ecloseur's chalets, at 1904m. The path goes up to the Alpe Pila, at 2025m. It continues along a deep narrow valley and it reaches the tableland where the old Alpi Grauson are, at 2271m. After to have bridged the Grauson stream, the path runs along a grassy valley, before reaching a brow of the hill. Before the Alpe Pralognan (2418m), go to the left towards the new Grauson pasture, where the bivouac is situated.
Notice: The bivouac's keys are available at Ezio Sport, in Cogne. Ph.# 0039165/74204.