(S/E) From the Millefonts car park (marker 32), about 5km north of Saint-Dalmas, take theGR®52(stage from Saint-Dalmas to Boréon) to the Col de Veillos (marker 83).
(1) Continue on the right along theGR®52. Further on, pass close to
(2) Lac Rond, Lac Long and Lac Gros. Arrive at Col du Barn (marker 84), the entrance to the heart of the Mercantour National Park
(3) Leave theGR®52, which descends into the Barn valley towards the Collet cattle pens, and continue straight ahead, heading south/east towards the summit of Mont Pépoiri (2,674 m). The path is well marked with cairns.
(4) From the summit of Mont Pépoiri, descend off the trail on the southern slope, heading south/south-east, to reach a pass and then Mont Pétoumier (2,604m).
(5) There is a beautiful view of the village of Saint-Dalmas. Descend to the pass heading north/west and, further on, turn west to reach Lac d'En Veillos (often dry in summer).
(6) Continue westwards and, shortly afterwards, head west/southwest to rejoin theGR®52trail and the Millefonts car park (S/E).