The Lac des Rousses peat bog trail
Les Rousses

The Lac des Rousses peat bog trail

Fauna – Flora
Lakes, rivers and waterfalls
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A wooden boardwalk allows visitors to discover the peat bog and to immerse themselves in the diversity of the lake's landscape during this short excursion that is accessible to all.
Just a few minutes from the village, in spring and autumn, the peat bog creates touches of colour in this green landscape surrounding the sparkling waters of the Lac des Rousses. Original interpretive media complete the discovery of this remarkable Jura ecosystem.


From the parking lot where you will find the directional signpost reading PORTES DES ROUSSES D'AMONT, take the path to your left to reach le Rocher du Lac. Use the boardwalk to reach the nautical base and then the LAC DES ROUSSES.

You may return by using via road or through the Rocher du Lac.
Several stops will enable you to understand how the peat bog and the lake work, with the help of 5 media: 
  • The lake's habitat and its operation
  • Glacial origin and drinking water
  • The peat bog's functioning
  • The origin of the peat bog
  • A protected area
To learn more about peat bogs and wetlands, the documentary  "Tourbières, trésors cachés de la montagne jurassienne" (Peat bogs, hidden treasures of the Jura mountains) and a specific module on this topic are a part of the permanent exhibition held in the Maison du Parc in Lajoux, 25 minutes from Rousses.
  • Departure : Lac des Rousses
  • Arrival : Lac des Rousses
  • Towns crossed : Les Rousses



Every year, thousands of hikers pass through this trail. For the well-being and safety of all, and to respect the environment, here are the rules to observe:

  • Please keep your dog on a lead
  • Do not leave the deck
  • Cycling is not authorised
  • Take your waste with you
  • Do not light any fires outside of the equipment provided
  • The plants and wild flowers in the peat bogs and surrounding fields are beautiful, they may be rare and protected and often wilt quickly. Do not pick them! They will delight the next hikers.

Information desks

Tourist information centre - Station Les Rousses Haut-Jura

495 rue Pasteur Maison du Tourisme, 39220 Les Rousses (0)3 84 60 02 55


To visit and get about in the High-Jura, visit, the eco-mobility portal listing all means of transport within the Park.
During the summer season, a bus runs every day, its timetable is available on the website of the Rousses station's Tourist Office.

Access and parking

2.5km to the North-East of the Les Rousses village, take the D29E1 towards Bois d'Amont, then branch off to the left on the D29E2. The Lac des Rousses is well signposted.

Parking :

At the departure point, Porte des Rousses d'Amont


Joëlettes (all-terrain one-wheeled chairs)
Emergency number :114

More information

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