From La Chapelle-en-Valgaudemar, take the road towards the Accro-branche site, continue on and reach the hamlet of Les Portes. Cross the hamlet and reach the Fouronnière car park located 1.5 km away.
(S/E) Head to the left of the car park to find a bridge over the Tempier torrent.
After the torrent, leave the path on the left and continue to the right towards "Le Chapeau".
Reach a second bridge, turn right towards the Cascade de la Buffe waterfall and the hamlet of Navette.
Pass in front of a recent house and a little further up on the left you will find a path in front of the information panel about Navette. Turn left onto this path, cross the ruins of the hamlet and arrive in front of the restored church.
(1) Turn left to begin the climb towards the waterfall, through the forest and then into open country.
(2) You will come to a crossroads. Ignore the path on the right that climbs towards Le Chapeau and continue straight ahead until you reach the foot of the Cascade de la Buffe waterfall.
(3) Turn around and return to the car park via the same path (S/E).