Park in the large dirt car park located shortly after Prafauchier and the Saint-Claude Chapel.
(S/E) Take the wide track called Sentier des Sioux, cross the Cerveyrette on a wide footbridge, then walk along the left bank of this river. Cross it again further on and, on the right bank, reach a new footbridge at the foot of the Lac des Cordes trail.
(2) Cross back to the left bank and tackle a short, easy climb, walking through the woods to reach afourth footbridge. Return to the right bank and, a few metres further on, you will reach the Refuge des Fonts de Cervières.
(3) Retrace your steps to return to the Prafauchier car park (S/E).