Via the Munster Valley, take the Petit Ballon road and park at the pass a few hundred metres from the summit.
(S/E) Take the wide forest path on the left, which starts off flat in a forest (markings: red disc).
(1) Before the path descends, climb up to the right onto the trail (red cross). Wind your way through the trees. When you reach a carriage road, turn left, then very quickly right. Follow the steep north-eastern slope of the Petit Ballon.
(2) You will soon reach the summit. Go through the fence and descend opposite to reach the refuge visible below. At the refuge, turn right to reach the pass (S/E).
