A unique trail with its stretches across ridges and its descent in part at the foot of the cliffs. 

“Of course, the main things you remember from this itinerary might be its impressive sections on the ridge or past the limestone cliffs, but the rustic descent below the hamlet of Les Roberts is one of the loveliest you'll see, not to mention the stretch along the Biaysse. All these contrasts make it really fascinating.” Marie-Geneviève Nicolas, park ranger at the Parc National des Écrins