Park in the Castérino car park.
(S/E) Head towards the bridge located a few metres from the information point. At marker 367, cross the bridge and you will soon come to a crossroads on the edge of the Torrent de Bieugne.
(1) Keep to the right to reach the junction at marker 368.
Yellow markings are faded but still visible
(2) Turn right and follow the signs for Baisse d'Ourne. Follow a gentle incline to reach marker 366.
(3) Turn left onto the path and you will soon reach a track, which is tarmac for a few metres and then cemented. The latter turns into a path. Follow it through the woods and, after a series of hairpin bends, you will reach the mountain pasture at the edge of the woods.
(4) Walk through the mountain pasture, taking care as the path is a little less visible but still there. At marker 356, you will reach La Baïsse d'Ourne.
(5) Turn left onto this beautiful carriage road built by the Italian army at the end of the 19th century. Enter the woods again, walk slightly downhill and, at a right-hand bend, you will reach an oratory.
(6) Continue here on a very slight incline, pass in front of the Alda Fountain, then walk alongside a blockhouse before reaching marker 369.
(7) Turn left towards Castérino, taking the tarmac road, but remain cautious, even though this area is very rarely used. You will reach an alpine hut.
Be careful, as there are no more markings after the house
(8) Go behind this house, head south towards the watering hole, and take the path through the fields. If there is a herd of cows, please go around them. There are a few cairns to mark the path in the wooded area. At the end of the descent, you will reach a crossroads with several directions.
(9) Take the path opposite, reach the left bank of the Torrent de Bieugne, continue and return to the initial crossroads you passed on the way there.
(1) Turn right and retrace your steps to return to the Castérino car park (S/E).