Cabane Chanrion - Prise d'eau d'Otemma - Lac de Crête Sèche - Prise d'eau d'Otemma - Cabane Chanrion
From the Chanrion mountain hut, follow the dirt track towards the Otemma water intake. From there, take the path towards the Col de Crête Sèche pass until you reach the Crête Sèche lake. Head back via the same route you arrived on.
