Tips :
Tip for seeing marmots: prefer cooler times like in the morning or at the end of the day
Guidebook with maps/step-by-step :
1/ | Point n°1 | From the Laisonnay car park (1560m), take the tarmac road for 300m; after the bridge, first turn left onto the track which then goes to the right, towards the Glière refuge (1996m). | Point n°2, n°3 et n°4 | From time to time, a trail allow you to shortcut. 2/ From the refuge, retrace your steps to get back on the track that climbs to the chapel and the lake. | Point n°5 | On the left, a fairly steep path rises up to join the track higher up; | Point n°6 | you quickly reach the Plagne mountain pasture; you pass below the Plan du Sel chalet where the mountain Beaufort cheese is made, the "Prince of Gruyères" with a registered designation of origin. 3/ The itinerary continues on a path | Point n° 7| that crosses under the chalet of Grand Plan; it rises slowly up the Combe du Grand Plan (East) to go straight under the Col de la Croix des Frêtes | Point n°8 |