Park in the car park at the bottom of the village of Freyssinet, on the edge of the D1091.
(S/E) Walk up the main street (Rue Sainte-Luce), in a north-easterly direction, pass the church and reach the top of the village.
(1) Take the Route de la Mine to the right, which quickly turns into a broad stony path. Walk up it until you get to a fork. Don't take the GR® parting to the left (signposted Puy Freyssinet) but continue on the main path which takes you east to the first mine.
(2) Step onto the mine's alluvial fan. To your left you can see the bricked-up entrance from the main gallery. There's a stunning panoramic view of the summit of Les Agneaux (right), the Dômes and the Col de Monétiers (left). Continue along the heap and at the end, take the path that climbs up to the left. Walk up through the mountain pastures (in a north-easterly direction) staying on the ridge overlooking the gorges of the stream. You'll arrive at the second mine.
(3) Cross the platform of the mine and join the trail that climbs from Serre-Barbin to Puy Freyssinet. Follow this down and after a rocky barrier, you come out by a small bridge over the river Roche Noire.
(4) Cross it and continue down the trail. Follow the marked trail in the direction of the village of Serre Barbin which you can see down below. When you get to the top of the village (water catchment) go down the street up to the fork.
Turn right (signposted "Au soleil de la Guisane") and follow the small Route du Freyssinet that leads back to the start point (S/E).
