Park in the car park at the Rophemel dam, located in the commune of Guenroc (22).
(D:A) Take the path bordering the field opposite the car park and go around it on the right until you reach a path leading slightly downhill into a wood.
(1) After 120 metres, when you see the first houses of the hamlet of Prédalun, immediately turn right onto the path. When you reach the meadow, go around it on the right until you reach a ford in the vegetation, which will allow you to cross the small stream.
(2) Walk along the cultivated field until you reach and take the footbridge crossing the Rance. Walk along this other field until you reach the small tarmac road.
(3) Turn right and follow the tarmac road for 180 metres, then turn left onto the slightly uphill path at the edge of the woods. Follow it to the Chapelle du Val chapel in the commune of Plouasne.
(4) At the chapel, take the forest path on the right. After 170 metres, at the first three-way junction, leave the path on the left and take the one on the right, which climbs steeply to join another path, also uphill. After a sharp left turn, continue through the undergrowth. Walk along a cultivated field for a few metres to cross a grove located under the water tower to the stone path under the high-voltage line.
(5) Take the gravel path on the left to reach the hamlet of Le Rocher, cross it to reach La Noë via a small tarmac road. At the intersection, go straight ahead to reach a gravel path leading to a plateau of large crops and very clear of vegetation.
(6) At the first junction with theGR®34C, continue to the right along another gravel path leading to the hamlet of Callouet, identifiable by its rotating solar panels.
(7) At the exit of the hamlet, turn right onto a small tarmac road. After 80 metres, turn right again onto a grassy path crossing the fields. When you reach the undergrowth, take a small sunken path on the right, skirting a meadow on the right. Cross a stream and climb a few metres to take the path on the left leading to the edge of the pond. Continue, watching out for potentially dangerous rocks, until you reach a grassy area with a shed that can be used as a shelter. Continue along the path running alongside the pond on the right until you reach the D25 near the bridge. Cross the bridge.
(8) Take the path on the right that enters the undergrowth, not the one that descends to the bank of the pond. Follow it until you go around some houses and, after a few steps, come out onto a small tarmac road. Take it on the right. Cross the hamlet of La Hannelais. At the end of the tarmac road, follow the path leading left into the undergrowth, ignoring the path leading down to the bank of the pond. When you reach a small meadow, go around it on the right, leaving the houses on your left. Continue along the path going around the Ker Al Lann holiday village in Guitté.
(9) After going around the point, leave the path leading to the holiday village and take the path on the right that descends to the edge of the pond. Follow it, sometimes winding through the undergrowth, until you reach the tarmac road leading to the holiday village. Do not take this road, but immediately turn right onto the path that crosses a small stream and leads to the edge of the pond. Continue for about 2 km, taking care on the steep sections, until you reach a picnic area.
(10) Join the paved road, crossing the hamlet of La Suais, and at the end of the climb, turn right onto a grassy path, sometimes blocked by a simple string. Reach the edge of the pond and follow it until you arrive at the hamlet of Beaumont. Cross the bridge over the pond on the right, with the Château de Beaumont on your left.
(11) After the bridge, turn right onto the grassy path running alongside the fields and continue along the edge of the woods.
(12) As you approach a property, leave the path on the right leading to this house and continue straight ahead along the path through the woods. A few metres further on, at a left-hand bend, leave the path and take the path on the right, still through the woods.
(13) Be careful, at this point, the path invites you to go straight ahead, but this will only lead you deeper into the vegetation. Turn left near the balustrade and climb a few steps up the steep path. Further on, turn right to reach the viewpoint over the pond.
(14) Retrace your steps and take the path on the right that runs along the top of the pond.
(15) Access the Fontaine de Jarnouen fountain located 10 metres to the left of the path. Then go around the tip of the hamlet of La Giguais and pass in front of Beau Rocher. After a light shelter with a pontoon on the bank, leave the hamlet of Ville Bourdais on your left to arrive at the confluence of the Rance and Néal rivers.
(16) Continue through the undergrowth towards the Rophemel dairy farm, going around it on the right.
(17) At the signpost, take the path on the right towards La Choletais and the dam car park, your starting point (S/E).
