Rousset pass - But de l'Aiglette

Rousset pass - But de l'Aiglette

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Crest Route with breathtaking scenery
The But de l'Aiglette, from the Col de Rousset, is a more than seductive stage. Although short, this route offers a great diversity of landscapes. The ski hiker will appreciate, from the southern edge of the plateau of the Vercors, the view overlooking the marshy hills of the Diois which extend at its feet.

He will have, during this incursion, perhaps the chance to observe the Vulture Fauve reintroduced in 1996 in the Regional Natural Park of Vercors.

2 points of interest

  • Ancient Roman road

    A superb mule track (ancient Roman road), carved in the middle of a cliff, allowed the convoys of mules and the flocks to climb from the Diois, to reach the Chironne meadow and then, via the eponymous pass, to Vercors. This development, which required many years of work and many years of work, shows the men's perseverance in providing access to the valuable resources of mountain pastures.
  • The Chironne mountain pasture

    It is an enclave of the commune of Chamaloc located at the foot of the road of the pass of Rousset on the plateau of Vercors. Pastoral tradition of the south of France, the transhumance of the sheep is registered in the agricultural practices for more than 1000 years. Each commune of piedmont has always sought to have alpine pastures on the surrounding mountains. A pastoral grouping, allows several breeders of the villages below, associated with colleagues of Alpes de Haute Provence, to finance a shepherd and the equipment necessary to the sheep of a herd of sheep: access track, catchment of sources , Water reservoir and sheepfold. Attention, we are in a wolf zone. The herds are protected by Patou dogs. If you cross sheep, make a wide detour. Keep your dog on a leash!


From the tunnel carpark (1254m), take the old Roman road which overlooks the Diois, pass under the departure of the Via Ferrata, path in cornice carved in the rock. Then, go under a canopy to quickly reach a snowy valley. Shoot full North for Col de Chironne 1 (1416m). Climb south-west the slight slope leaving on the right the cross-country ski run that runs to Vassieux-en-Vercors. At point 1467m on the IGN map, join the southern edge of the plateau above the Rochers de Chironne. Follow the ridge that runs into the forest (south-west orientation). After about 1h30, reach the But de Aiglette 2 (1524m).

The return is identical to the itinerary of the outward journey.
  • Departure : Tunnel of the Col de Rousset
  • Arrival : Tunnel of the Col de Rousset
  • Towns crossed : Chamaloc and Vassieux-en-Vercors


Altimetric profile

Sensitive areas

Along your trek, you will go through sensitive areas related to the presence of a specific species or environment. In these areas, an appropriate behaviour allows to contribute to their preservation. For detailed information, specific forms are accessible for each area.

Griffon vulture

Impacted practices:
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Sensitivity periods:
Impacted practices:
Sensitivity periods:
Association de Développement et d’Économie Montagnarde de la Drôme
Parc du Vercors

Peregrine falcon

Impacted practices:
Sensitivity periods:


This itinerary is only to be undertaken on a safe basis. The route follows a ridge course with significant peaks. Before leaving, inquire about the level of snow, risk of cornices in edge of cliffs. The departure of the hike may lack snow.

More information on Nordic Walking

Nordic walking is a respectful and responsible practice. Before you jump into the field, train yourself.

Information desks

Place Pietri, 26 420 La Chapelle-en-Vercors 75 48 22 54

Access and parking

From Grenoble, take the road to Sassenage, then the D531 towards Villard de Lans. Continue on the D531 towards Corrençon en Vercors. Continue towards the Gorges de la Bourne. Follow the D103 for St Martin en Vercors, then Tourtre. At Saint Agnan en Vercors continue on the D 518 until the station of the Col du Rousset. Continue towards Die on the D518 via the tunnel. Park, right, just out.

From Die, take the D 518, pass the village of Chamaloc and continue towards the Col du Rousset. Park on the left before the tunnel.

Parking :

Parking on the right after leaving the tunnel


Emergency number :112

Report a problem or an error

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