Access: In Saint-Pierre-de-Chartreuse, take the small road that heads east from the town hall/school. Continue to the bottom of the valley. When you reach the hamlet of Perquelin, continue along a gravel track to reach the two car parks (yes, it often gets very busy...).
(S/E) Leave the Perquelin car park and continue along the gravel road towards the rock face (east). There are two hairpin bends.
(1) You will arrive at a flat area (signposted "Ruisseau de Bellefont-1170 m"). Ignore the path that climbs to the right towards the sources of the Guiers. Continue along the gravel forest track towards the Col de la Saulce.
When you reach a fork, take the left branch. Then, at a three-way junction, take the middle path. Immediately after, you will come to another fork and take the right branch.
Continue along this path. Be careful to spot a trail on the right. If you pay attention, you will have no problem.
(2) Take the path on the right, marked by a yellow sign on a tree. You will cross a small stream. Continue along this narrow path for a long time. Ignore the two forest tracks that it crosses.
(3) You come to athird forest track. The path continues to the left, so follow it. It ends at a forest track, which you take to the left and then to the right (make a mental note of the location for the return journey). It quickly narrows to become a path itself.
(4) You will reach the sign for "Col de la Saulce - 1480 m". You will head right towards the Cabane de Bellefont, but take the time to walk 50 m back towards the pass. You will have a beautiful view of the Lances de Malissard rock barrier. From the pass, turn back and take the path that is now on your left.
(5) You will arrive at the recently rebuilt Cabane de Bellefont. Enjoy the view of almost all the peaks of the Chartreuse.
The return journey is straightforward, following the same route back to the car park (S/E).
