From Gresse-en-Vercors, drive up the Montée du Serpaton. Park in the car park.
(S/E) Walk up following the road towards the telecoms masts. After a hairpin bend, reach the Croix de Gresse.
(1) Continue to the end of the road to reach the telecommunications masts.
(2) Turn right, heading due south, onto the Crêtes des Rochers de la Montagne de Gresse trail. Pass by the summit of the Croix de Saint-Paul. Climb up to the launch pad at the Croix Free Flight Site. Continue along the trail to reach the Rocher de Baconnet.
(3) Continue along the Crête des Rochers path to reach the Crête des Rochers des Chaux.
(4) Continue downhill now and pass close to the Gouffre du Roc de Cognière, where there are two shrubs. Continue for about a hundred metres to reach the junction with the Crête des Rochers des Côtes.
(5) Turn right and, at almost a 180-degree angle, take the path through the mountain pasture towards the Pas de Serpaton. Walk on almost level ground until you reach a crossroads of paths directly below the Rocher du Baconnet.
(6) Follow the cattle track straight ahead, slightly uphill, which runs almost parallel to the Crêtes des Rochers path. You will reach the Fontaine du Pré de la Roche.
(7) Continue until you reach the road at the hairpin bend you passed on the way out. Turn left onto it and follow it to the Croix de Gresse.
(1) From here, retrace your steps in the opposite direction to return to the Pas de Serpaton car park (S/E).
