Perroud bridge
Perroud bridge

Perroud bridge

History & heritage
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From the coolness of the gorges of the Forebay of la Chaille to the belvedere of the Maquisards on the Morez water gap, you will journey along a relatively easy and varied trail, through a mix of forest environments, geology and history.
Under the cover of the forest, the forebay of la Chaille flows through an intimate location, using the whisper of its rapids like music in a game of seduction.

4 points of interest
History & Heritage

Perroud bridge

The old Perroud bridge, the waterfall and the ruins of the old mill are signs of just how much power the High-Jura needed to be able to grind, saw, and strike iron for example. 

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Viewpoint over Mont Fier

Mont Fier seems to defy the rules of morphology set by the Jura relief. By its very definition, a mountain is comprised of an anticline (a fold that is convex upwards) and a synclinal valley (a fold that is convex downwards). However, on observing the limestone strata that make up Mont Fier’s cliff, there are signs of a very shallow syncline. This rocky headland, isolated between two depressions, is the only example of a perched syncline in the Jura.

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The red crossbill

This bird climbs up branches much like a parrot would, using its crossbill. In terms of plumage, the male wears a brick red colour with brown wings and a brown tail. The female has olive plumage along her back and a yellow breast. This bird feeds primarily on conifer seeds. Food is also an important guide for this species behaviour; should food be lacking, it may suddenly leave its habitat for a more suitable environment. This mountain bird nests in the middle of winter, despite the harshness of the climate, to adapt to the period during which spruces start producing seeds.

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History & Heritage

The Espace des Mondes Polaires (Polar World Centre)

Dive into a polar universe on your trip to the Espace des Mondes Polaires (Polar World Centre), the first cultural centre in France dedicated to issues relating to the Arctic and Antarctic, the climate and the environment. An ice rink and a restaurant are also available on-site.

To find out more, visit:
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From the village centre, the trail heads up through the village (white and red waymarking) towards the Forebay of la Chaille via the D 25. At Abbé Barthelet, continue and follow the road to the left that descends to Prémanon d’Amont. After a steep descent, a forest path will lead you to the walkway over the Forebay of la Chaille.

  • The waterfall can be reached within 10 mins to your right by following GR® 5, at the foot of a former mill.

The trail, that is rocky and muddy in some places, branches off to the left under the cover of forest to reach Sous le Saut and Le Bonzon.

Head down to the path to your left (yellow waymarking) until you reach PERROUD BRIDGE. Cross the recently restored bridge and head up a very steep trail. A narrow and steep trail to your left opens onto a gravel path and crosses over an intermittent stream. Head up to the right to Sur le Bief (house). The trail then turns right on a good path, crosses the D 25 and comes to Sur le Belvédère.

The BELVEDERE OF THE MAQUISARDS is 5 minutes away to your right across the D 25.

Returning to Sur le Belvédère, head opposite you up the old "route de Morez", towards Prémanon, with the Chez Jeankessis farms on your left.

Without ever changing direction, heading due south, follow a road for 150 m, and then a path for 400 m. The trail crosses another road behind the hamlet "Sur la truffe" before exiting onto the D 25 at the entrance of PREMANON.
Departure : The centre of the village of Prémanon
Arrival : The centre of the village of Prémanon
Towns crossed : Premanon, Les Rousses

Altimetric profile


Be careful around the gorges of Perroud bridge and on both occasions when crossing the D25.

This trail uses forest paths. To respect the owners and farmers granting you passage, and for the security of livestock and wild fauna, we ask that you remain on the waymarked paths. Use the adapted passageways to get across fencing and be sure to close gateways behind you.

Please keep your dog on a lead if you have one.

Wild flowers are beautiful, they may be rare and protected and often wilt quickly. Do not pick them! They will delight the next hikers.

In case of forest works (felling, skidding, etc.), for your safety, know when to stop and turn around.

Information desks

Tourist information centre - Station Les Rousses Haut-Jura

495 rue Pasteur Maison du Tourisme, 39220 Les Rousses

+33 (0)3 84 60 02 55

Find out more


To visit and get about in the High-Jura, visit, the eco-mobility portal listing all means of transport within the Park.

Access and parking

4 km southeast of les Rousses via the N5 followed by the D 29 and the D 25.

Parking :

in the village centre, opposite the map of hike starting points

Report a problem or an error

If you have found an error on this page or if you have noticed any problems during your hike, please report them to us here: