Vertical drop: 150 m
Technical difficulty: Fairly serious. Steep and exposed traverses. Complex route finding.
From the classic Chancel side, take a sharp right turn towards Breche de Pacave and continue down a wide slope to the lake.Ski down the middle line of the valley to reach the rock-face overlooking the lake. The entrance to the couloir is just below a large nipple-shaped knoll! The exit is along the left side of the lake.
Be careful skiing toward Couloir du Lac. Risk of wind-slabs may form on the traverse just before the couloir, high risk of slipping on hard-packed snow.