(S/E) Descend from the refuge towards Lac de la Fous, either via the wide circular path (as shown on the map) or via the direct path and steps (shortcut).
(1) Once you reach the La Fous plain, cross the stream flowing down from the first valley (Vallon du Mont Clapier). Head north and begin climbing up the ridge between the two valleys (Clapier de Pagari). At the start, several paths are marked by clear passages. A few cairns provide guidance from time to time. Avoid shortcuts and opt for the longer circular loops.
On one or two occasions, you may need to use your hands. Go round a boulder on the right. The cairns will guide you if in doubt, but the paths all lead to the Lacs basin.
(2) The return journey follows the same route back to the refuge (S/E).