(S) From the Col de l’Arc, head south-west to follow the path and signposts towards Bellachat. The ascent is long but fairly gradual, with no particular difficulty, even on the final hairpin bends, which are steep but well-marked and end at Mont Bellachat.
(1) Continue along the ridge for a short while and then begin the descent. Pass a small shepherd’s hut; there are numerous herds in the area.
(2) Now take a more exposed path to pass beneath the Pointe des Marmottes Noires. Continue down a steeper descent until you reach a Y-shaped junction.
(3) Turn right, passing beneath the Combe Bronsin to go round the Teurs hill and reach the Lacs du Loup, situated below the Pointe de Combe Bronsin.
(4) Walk round them, keeping a general southerly direction; please note: the path is in very poor condition in this area. You’ll soon emerge below the Chalet Colomban and above the Chalets de Lachat.
(5) Stay on the track to the right, then turn left onto the path; there are clear markings and signposts towards Arpettaz. Follow a long, steep path, passing the Crête de Colomban. Please note: some sections require you to use your hands.
(6) Head back down towards the Arpettaz mountain pastures via a long descent where some recent scree has led to well-marked detours. You’ll come to another Y-junction.
(7) Stay on the path on the right, reach Lac de l’Arpettaz, walk along its left-hand side, then arrive at the Refuge du Logis des Fées (E), today’s stop.