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Park in the large car park at the Milhars village hall.
Almost the entire route is signposted in yellow.
The markings alternate between those of the PR® de la Gresinhòla and those of the PR® de la Vallée de Bonnan; occasionally, some sections are shared.
Part of the GRP® Cordes-Penne-Coustous, marked in red and yellow, will be followed halfway along the route, around Roussayrolles.
(S/E) On the D600, with your back to the village hall, turn left towards the Place de la Mairie.
Opposite the community café, cross the road and head up to the right.
(1) This uphill street passes two wayside crosses. At the second white wrought-iron cross in Bournazel, continue straight ahead, following the sign for the Bonnan Discovery Trail. After the bend, the road descends and approaches the stream.
(2) Leave the road and head straight on along the wide dirt track. You’ll reach the edge of a second bridge. Turn right to cross the bridge. Just past the bend, note a huge, centuries-old elm tree on the left. Continue along the Bonnan Stream, which remains on your left. You’ll reach the foot of the petrified waterfall.
(3) Tuff waterfall. In summer, the waterfall is dry, but in winter the spring flows abundantly or becomes covered in stalactites when it freezes. It is possible to walk up to its source. After exploring, continue on to the third bridge.
Cross back over to the other side of the stream. At the signposts indicating the trails, follow the PR® Vallée de Bonnan by heading right. Continue walking, on almost level ground, to the ruins of the Madeleine Sarcophagus Chapel. Make your way to the final ford crossing the Ruisseau de Bonnan.
(4) Cross the stream one last time. Follow the yellow-marked path, which winds its way through the woods. Walk alongside a cattle enclosure, then through woodland and pasture. You’ll come out onto a wide track suitable for vehicles, at an elevation of 367.
(5) Turn left. Pass a tree on your right that has knocked down a small signpost. You’ll come to the entrance to a meadow with a large shed on your right. Continue straight ahead until you reach the Clauzels access road.
(6) Cross the road and take the dirt and stony track straight ahead, making sure to close the gate properly behind you. Walk alongside the Touron, keeping an eye out for the farm’s livestock. At the Y-junction, with a cross at the corner, continue to the right. On the tarmac, head left towards the church and cemetery at Roussayrolles.
(7) Walk past the town hall and continue along the road, ignoring a path branching off to the left. Pass another picnic table and a wayside cross. Walk past a house and, just after it, turn left onto the wide dirt track, the GRP® Cordes-Penne-Coustous.
You’ll come to a reservoir and the Fontaine Mère de Dieu.
(8) Cross a ford over a buried pipe. It is near this point that the Ruisseau de Bonnan has its source. Climb a short, grassy slope. The GRP® continues gently until it reaches the Route des Fontanelles. Further on, after a bend to the left, you’ll cross the D9.
(9) Leave theGRP® by following the road to the left. Pass Grézelles Hautes. Reach Grézelles Basses. Walk a few steps past the access lane to the farm of the same name.
(10) Turn onto the path branching off to the left. Walk downhill to the bend in the D9.
(11) Cross the road and continue descending, following the path opposite. Join the D9 near the Les Grailhettes campsite.
(12) Walk a few dozen metres to the right, then, at the Fork in the road, take the left-hand branch to follow the Ruelle de Carguemech. Continue downhill to the large stone cross at Alric.
(1) Turn right. At the corner by the community café, cross the D600. Head left and follow the path in the opposite direction to the way out to reach the car park at the village hall (S/E).
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