Head towards the Col d’Izoard and Cervières via the D902. In Cervières, just after the entrance chicane, head up towards the higher part of the village by taking the first left at the junction, to join the D89T at the Église Saint-Michel; this road will take you to Les Fonts de Cervières, the end point and car park.
(S/E) From the car park, walk past the refuge and skirt the village of Les Fonts, then cross the meadow to the south and the Pierre Rouge stream.
(1) At the signpost, turn right and head south ontothe GR®58(red and white markings) towards the Col de Péas. The path climbs diagonally and follows the course of the Cerveyrette stream.
(2) Turn left at the second junction, heading towards the Col de Péas (still following the red and white markings). After crossing the pastures, the path climbs steeply in a series of switchbacks. It then emerges into the mountain pastures, which it crosses until reaching the Col de Péas, marked by a large cairn.
(3) From the pass, head off-trail to the left, towards the east, following the ridge line and the few cairns. You’ll soon reach a secondary summit from which you can see the bare summit. To get there, descend a few metres before climbing up the slope through the ‘lauzes’ along a well-marked path dotted with numerous cairns, which leads to the Sommet du Grand Vallon.
(4) Return in the opposite direction via the same route to reach the car park (S/E).
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