From the Col de la Croix de Fer, this circuit goes around the small lakes of altitude to 2000m. These lakes are popular as a picnic spot. The show is often grandiose when Aiguilles d'Arves and mountain flowers are reflected in the mirror of the water. The route is descending to reach the first lakes Potron and Guichard. Then you go back to Lac Laitelet by crossing the road. In summer you will probably meet marmots and cows. The ascent to the Col is by a single path with a playful profile. After the run take a moment for a landscape reading at the orientation table at the Col.