Description:
From the parking follow the road and any cut through's towards the Cabane De Tramouillon, before you get to the Cabane turn south into the trees to the Cabane de l’Ubac. From the Cabane climb up to the crete dela Selle. Follow the crete west and climb to the 2608m high point at the eastern edge of the Terres Noires.
Descent:
Drop off the high point by a few options and ski to the east of the Lac Trouble, and in to the trees head down and trend east to the valley floor (ideally as close to the Cabane Tramouillon as you can) from here follow the road back to the parking.