Before the Col Agnel, stop the car at the Agnel refuge (2,580 m).
(S) From the car park, take the marked trail (GR® 58) that starts behind the refuge.
Ignore the path on the left that climbs to the Agnel Pass and take the one that turns right and leads to the Chamoussière Pass (2,884 m).
(1) Crossing the Aigue Agnelle.
(2) From the pass, follow the south-east path which easily reaches the Pic de Caramantran (3025 m).
(3) Descend via the same route to the car park (E).