To get to the Champsaur via Le Pas de la Cavale, a gentle footpath runs the length of the Fournel valley. This is a long hike in some of the wildest scenery.
"Freezing and enclosed, the Fournel valley? Not as much as you would think as even the pig that the shepherd took to the Grand Cabane got sunburnt!"
Jean-Philippe Telmon, warden.
From the Deslioures Car Park, at the end of the trail that follows the Fournel stream, take the footpath to the right, which is an alternative itinerary to the GR54 trail (Tour of Oisans). After the first few bends, you will arrive at a plateau from which a trail through the shale leads to La Balme pastoral hut. Follow this trail to the Clausis stream and enter the National Park. Then continue until you reach the Grande Cabane, which is situated above the Fournel glacial cross-cliff.