Park in the Choranche car park on the Presles road.
(S/E) Follow the road uphill, pass the cemetery and cross the Jallifiers stream. Take the path on the right and, after 100 metres, turn right again to join the access road to La Ranconnière. Continue to the right to cross the hamlet and reach a fork in the road.
(1) Turn right to continue climbing towards the Choranche Cave.
(2) At the crossroads in the bushes, continue towards the cave and the underground lake of Gournier.
(3) Turn back.
(2) Turn right between the boulders just after a wooden terrace. The path is not easy to find; head towards the cliff. Once you have passed the boulders (about 50 m), follow this path westwards. Take care, as some sections are narrow along the ledges. Continue to Balme Rousse.
(4) Take your time to enter the cave and explore it. Be careful, the ground can be slippery and, depending on the season, there may be more or less water in the gours.
When you leave the cave, continue along the path that descends steeply to the right. A rope helps you down. Stay on the path that leads to the cliff, taking another rope on the right to climb a small cliff and stay on this narrow path at the foot of the cliff. Join the path that climbs to Presles from Choranche, marked in yellow/green.
(5) A sign on the ground indicates the direction to descend towards Choranche on the left. Stay on this path, which continues to descend with stones that can roll. Take extra care. This will bring you to a junction with a wider path.
(6) Continue downhill opposite. The yellow and green markings are not very visible.
(1) Continue straight ahead to return to the hamlet of Ranconnière, which you crossed on the way up. Follow the path that branches off to the left as you leave the hamlet and continue downhill on the same path as on the way up to the car park (S/E).