Park in the newly developed car park (with numerous information boards, maps, toilets, etc.) overlooking Plan d’Aval.
(S/E) Head north towards the Plan d’Amont dam. At the northern end of the car park, leave the road that descends towards the foot of the dam and take the path on the right signposted “Lac du Génépy”. Join the path climbing up from the foot of the dam (former car park) and quickly reach the Plan Sec ski lift on the right.
(1) Follow the road, turning left twice, and pass under the ski lift. Further up, turn right and join theGR®®5. Leave it shortly afterwards to reach the Plan Sec refuge on the right.
(2) From the refuge, head north. A path leads back to theGR®®5. 500m past La Randolière, leave the wide track branching off to the right for a path that crosses the bridge over the Ruisseau de la Fournache. Head up to the right towards the Refuge de la Fournache.
(3) From the refuge, follow the signposted path towards the Refuge de la Dent Parrachée. Please note that before reaching the refuge, a fairly steep snowfield persists late in the season (at the end of June 2016 it was still there).
(4) From the refuge, pass in front of the PNV rangers’ chalet and head down towards the wide torrent flowing down from the Glacier du Labby (be careful, as some sections are quite steep). Cross the torrent via a bridge upon reaching the Fond d’Aussois valley.
(5) Turn right and head up the wide valley towards the Col d’Aussois, passing the Notre-Dame des Anges Chapel. Reach the Fond d’Aussois Refuge (a bridge allows you to cross the Saint-Benoit stream).
(6) Head back down the same path to the bridge.
(5) Continue straight ahead towards the south-east. After La Sétéria, turn right towards the bridge.
(7) From the Pont de la Sétériat, follow a wide path overlooking the lake which leads back to the car park (S/E).