Vanoise Ski Touring. Paul Henderson

      Starting the climb to Mont Bellacha (Day 2). The pyramid in the background is the Pointe des Marmottes Noires.

      Descend the north-west arête to a small col at 2350m. The start is very steep and quite exposed. From the col descend sustained slopes due west, towards the Chalet des Rouelles. At the bottom of the valley follow a track to Lieulever and the Relais du Lac Noir. Early in the season it is often possible to arrive at the door of the auberge on your skis!

DAY 3

      The Grand Arc (2484m)

      Do not be put off by the intimidating appearance of the south-east face of the Grand Arc when viewed from Mont Bellacha. The slopes are the perfect angle for skiing making this one of Savoie’s great ski-touring classics.

      From Lieulever, follow a track which climbs through the forest past Les Platières (1341m). The lower slopes do not hold the snow very long so it is often necessary to carry your skis for this short distance through the forest. Stay on the western side of the stream until you leave the trees. Follow the base of the combe towards the north-west, passing below the Petit Arc. At around 2200m, turn towards the north to reach the west arête of the Grand Arc not far from the summit.

      The usual descent follows the ascent route. However, a more direct, and steeper, line can be taken almost directly from the summit, but take care to avoid the gullies which end in cliffs! Immediately below the cliffs, traverse due east for about 300m then turn right (south-east) to descend below the Bec d’Aigle. At an altitude of around 1450m, turn right again (south-west) to rejoin the track which leads back to Lieulever.

DAY 4

      Traverse of the Pointe des Marmottes Noires (2339m): Lieulever (1280m) to Le Biollay (1340m)

      The Pas de la Mule is not the easiest col to recognise. It is the second depression to the north of the Pointe de Combe Bronsin, just to the left of a quite distinct pyramid (point 2426m). The last thirty metres on both sides of the Pas de la Mule are quite steep and exposed and will often need to be climbed in crampons.

      From Lieulever, follow the track towards the Chalet des Rouelles. The ascent through the forest is a lot easier than it might at first seem, as there is a good track to follow. At the hairpin bend at 1300m, continue south-eastwards for about 150m to pick up the track which leads to the Chalet de la Perrière (1680m). Climb almost due east from the Chalet de la Perrière to an altitude of around 1850m. Bear right (south-east) to reach a flat area at 2145m. This is a small lake in summer. The Pas de la Mule is due east of this lake. It is best approached via a ramp, which leads in from the south, with the last 30m being done on foot. Traverse the col, descending about 50m on the eastern side, and then head due north to reach the summit of the Pointe des Marmottes Noires.