Between Lemme and Saine
Between Lemme and Saine

Between Lemme and Saine

History & heritage
Lakes, rivers and waterfalls
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A succession of ascents and descents, paths, trails and little roads to reach the Morillon cliffs, the Langouette gorges and the belvedere of Les Prés Grillet.

The villages that you will pass through - Chaux-des-Crotenay, Entre-Deux-Monts and Les Planches-en-Montagne, overlook the valleys of the Saine and the Lemme. This plateau was possibly the scene of one of the most famous battles in history. Good Gauls!

7 points of interest

  • Geology

    The Morillon cliffs

    Cleared by the Lemme, which has formed a wind gap here, the Morillon cliffs are a succession of vertical strata comprised of hard limestone ledges and marlstone layers that are more sensitive to erosion. This is a great location for a lesson in Jura geology: these sedimentary rocks were created around 200 million years ago, and their folds were created due to the mountain pressure between 11 million to 3 million years ago.

    Exposed by a geological cut, these layers are very visible and this site - which is now open to experienced climbers - is equipped with an interpretive signpost providing information of how this landscape came to exist.

  • Lakes & Rivers

    Étang des Drillettes (Les Drillettes lake)

    If you are in the mood for a short break, this calm lake offers an area to relax along the Quenot stream.

    From its shaded banks, observe the fish, birds and dragonflies with care in this green oasis full of life - swimming is prohibited!

  • History & Heritage

    Former diligence relays

    This imposing structure built in 1789, with a gambrel roof, also called a “Mansard” roof, is comprised of two stories of barns and two stories of cellars. Relays had to be able to accommodate a large number of hitches. For the Grandvallier “rollers” (road hauliers), who worked independently or on behalf of “rolling firms”, these relays were vital stop-offs. At the height of the rolling period, during the mid-19th century, rolling firms such as the famous Maison Bouvet established their own relays in major cities.

  • Lakes & Rivers

    Trail of the gorges of the Langouette

    Departing from the church, the Langouette faerie accompanies you on this trail marked by interpretive signs which will help you to reveal the secrets of the mysterious waterfalls and gorges of the Langouette, and to admire the wild beauty of this canyon carved by the Saine up-close.

  • Waterfalls

    The gorges of the Langouette

    A source of legends and history, the gorges of the Langouette are full of beauty and stories waiting to be discovered.

  • Viewpoint

    Belvedere of Les Prés Grillet

    At first glance, the landscape from this adapted belvedere offers mainly greenery.

    But take a look at its many hues: to the right, the dark gorges carved out by the Saine unfurl and open onto a small and quieter valley, where the river idly winds through a humid area before reaching a small village to your left. This is Syam, known for its smithies and Villa Palladienne.

  • History & Heritage

    Chaux-des-Crotenay Town hall

    This town hall is dated 1846 and has a remarkable bell tower. The bell - which represents the municipality’s voice, also has importance in civil life. The republican bell tower is managed by the town mayor or the founder and chimes the call of those with rights over the wood in municipal forests, municipal councils and fire hazards, etc.

    However, republican bell towers were never truly able to rival with the church bells, and were usually built when the church was too far from the centre of the village. (PNRHJ - Collection patrimoine, “Heritage collection”)


From CHAUX-DES-CROTENAY, head down the tarmac road (red MTB waymarking no. 69) towards Le Gros Tilleul. Turn right to reach La Fontaine Neuve and La Chaux Church

Branch off to the left on the tarmac road towards La Loye. Take the stony path that enters the forest to your right, towards La Côte Coulon and the Morillon cliffs in LE CERNOIS.

Continue on the stony path that soon turns to tarmac and that runs along the cliffs and heads up to Le Rachet. Take the tarmac road to your right through the open combe of Entre-deux-Monts to reach the hamlet of Les Merets.

Turn onto the road to your right and quickly turn left to take the stony path down towards the forest and up to the Étang des Drillettes (Drillettes lake). 

Continue on the muddy path that heads right up to Les Drillettes, and then take the long forest road along the Quenot rivulet to the road in Sous Grateloup

Carefully cross the départemental road and take the road opposite you that will lead you to the LAVOIR (washhouse) - LES PLANCHES-EN-MONTAGNE via La Fontenette and Le Girod

Continue on the main village road towards Bas du Village. Head down the road to your left and cross a bridge over the La Langouette gorges. Continue on the road, past LE MARTINET and reach Montliboz

Branch off to the right on a stony path that then heads up into the forest, towards Derrière la Montagne Ronde (“behind the round mountain”). 

Take the muddy path that follows along the right of the D 16 until you reach Chez Tatet, and then take the tarmac road down to La Feuillée au Loup

Turn left onto a small forest path towards La Voie Sacrée

Follow the white path to your right for 200 metres, and then turn left into an area with railings and a building. Follow a long and narrow trail through the forest. Exit onto a tarmac road, turn left and follow the trail to LES PRÉS GRILLETS

After the short out-and-back to the belvedere of Les Prés Grillets, continue on the tarmac road towards La Grande Cheminée

Descend to your left on the stony forest path and take the winding trail to your right to reach Les Messageries

Turn left on the tarmac road and reach the hamlet of Cornu. Continue left onto the road to the hamlet and then turn right just before the last farm. Head up the stony path through the pastures to reach Les Champs Montants

Turn right and return to your point of departure in CHAUX-DES-CROTENAY via a little stony path.

  • Departure : Chaux-des-Crotenay
  • Arrival : Chaux-des-Crotenay
  • Towns crossed : Chaux-Des-Crotenay, Entre-Deux-Monts, and Les Planches-En-Montagne


Altimetric profile


Be careful when crossing the D 127 in Sous Grateloux.

For an MTB outing, wear a helmet and bring enough water.

Paths are shared with pedestrians and horse riders, who have priority, therefore, please adapt and control your speed.

To use MTB paths, do not hesitate to get down from your bike.

This trail passes through pastures and 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 and close gates behind you where there are no MTB paths.

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

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


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

11 km south of Champagnole via the N 5 to Pont de la Chaux followed by the D 16.

Parking :

Parking lot in the village centre, Chaux-des-Crotenay

Report a problem or an error

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