To get there, take the Vésubie valley to Saint-Martin-Vésubie. On leaving the village, turn right towards Madone de Fenestre and continue for 12 km, parking at the sanctuary.
(S/E) At marker 357, behind the CAF refuge, head north. Follow the beautiful stone track to reach marker 368 (0H30).
(1) Turn right. The return trail is on the left. Cross the small stream and follow the well-marked trail to Lac de Fenestre (30 minutes).
(2) Walk along the lake and continue northwards until you reach the Col de Fenestre, which you can see from the lake. The slope is a little steeper but not difficult, and you will arrive at marker 369 (0h35).
To reach the Col de Fenestre, climb a few more metres.
(3) There is a beautiful view of the valley and Lac de Fenestre on one side and Val Gesso on the Italian side. The last part of this climb is dotted with blockhouses.
To reach the Pas des Ladres, descend to marker 369 and turn right. The path is well marked and crosses a small scree slope, followed by a slightly more difficult but safe passage before reaching the Pas des Ladres (0h35). Magnificent view of the beautiful Lac de Trécolpas.
(4) The return to our starting point is via a winding path from which you can see Lac de Fenestre again. Reach marker 368, which you passed on the way up (0h35).
(1) Continue downhill to reach the CAF refuge (0h25) and then the car park (S/E).