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Les Fonts de Cervières

Description

This groomed trail through the vast expanses of the Plateau du Bourget stretches for almost 15 kilometers to Les Fonts de Cervières. Discover an exceptional and timeless site, a hike for lovers of wide open spaces.

Detailed itinerary :

1. From the Foyer de ski de fond parking lot, walk 100m up the road and cross the bridge.

2. Return to the village on the main road. At the top, after the bend, pass the Ferme découverte La Maison des Bêtes à laine and continue straight on.

3. Continue along the snow-covered road that serves as a snowshoe itinerary and cross the Mur des Aittes.

4. After the Mur des Aittes, the view opens out onto the vast snow-covered plateau of the Bourget marshes. Continue on the track, which descends slightly and passes close to the hamlet of La Chau. Rejoin the straight that crosses the Bourget marsh.

5. Pass the various hamlets on the plain.

6. Halfway along, the valley narrows. The trail continues for 5 kilometers to the hamlet of Les Fonts de Cervières.

7. Return by the same route.

Technical Information

Walking
Difficulty
Easy
Duration
7h
Dist.
24 km
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Altimetric profile

Starting point

31 Parking du Foyer de ski de fond RD 902 , 05100   Cervières
Lat : 44.869495Lng : 6.724483

Points of interest

image du object

Marais du Bourget

Le marais du Bourget de Cervières inscrit au site Natura 2000 Rochebrune - Izoard - Vallée de la Cerveyrette. Zone naturelle d'intérêt écologique, faunistique et floristique, ce marais représente l’un des plus grands complexes tourbeux des Alpes du sud.Le marais du Bourget de la Cerveyrette est un complexe exceptionnel d'habitats humides associant des marécages divers, tourbières, plans d'eau et bas-marais. - Trois milieux remarquables y sont répertoriés : Les tourbières de transition, les bas-marais d'altitude des bords de sources et les bas-marais pionniers arctico-alpins. Ce sont des milieux d'une très grande valeur patrimoniale, possédant une composition floristique tout à fait caractéristique. - Flore : Le site comprend dix-huit espèces végétales déterminantes. Six sont protégées au niveau national : l'Androsace des Alpes, le Saule à feuilles de myrte, la Laîche faux Pied-d'oiseau, la Laîche bicolore , la Laîche des tourbières et l'Avoine odorante , inscrite au Livre Rouge National des plantes menacées. Faune : Le site possède un patrimoine faunistique d'un intérêt très élevé. Il abrite en effet vingt espèces animales patrimoniales, dont cinq sont déterminantes. Sont répertoriées entre autres : L'Aigle royal, le hiibou Grand-duc, Tétras lyre, Chevêchette d'Europe, Pic noir , Cincle plongeur, le Sizerin flammé et le Cerf élaphe.

Plaine du Bourget Vallée de la Cerveyrette 05100 Cervières
- Office de tourisme des Hautes Vallees -
Consulter
image du object

Aittes wall

This defensive wall was built in 1898-99 to block the gap in the Fonts de Cervières valley. The masonry wall is 328 m long and 2.5 m high, with more than a hundred firing battlements.Unterraced and preceded by a small ditch, the wall itself has a total length of 328.32 m, consisting of two straight alignments, terminated at both ends by a return and grafted onto a sort of central flat bastion, with one front and two flanks, which flanks it. Founded on a stepped footing to adapt to the sloping terrain, it has an average height of 2.40 to 2.50 m and a thickness of 0.45 ln, and is built of rough rubble masonry, hourd with lime mortar and unplastered. It is pierced at regular intervals by 134 "arched" crenellations and, in addition, by two passages, originally 2.36 and 2.80 m long, for paths. The south-east section included a small building measuring 5 x 3 m, leaning against the wall and used as a guardhouse for 6 men. Abandoned long ago, the structure has deteriorated as a result of weathering and the vandalism of stone salvagers: the coping tablet has disappeared, the guardhouse is in ruins and collapses are multiplying. The design of the Aittes wall (and its counterparts at Serre des Armes and Pas du Berger) is reminiscent of the layout of the "Vaudois wall", its ancestor by several centuries, and perhaps its inspiration. Given its date of construction, and with its thoroughly medieval structures, anywhere else it would appear to be a blatant anachronism in relation to the general technical context.

Les Aittes 05100 Cervières
- Office de tourisme des Hautes Vallees -
Consulter

Additional information

Environments

Mountain view
Mountain location
Village 2 km away

Updated by

Office de tourisme des Hautes Vallées - La Grave - La Clarée - L'Izoard - 27/10/2025
www.hautesvallees.com/la-grave/
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Type of land

Groomed trail

Reception complements

Please note that this particularly long route requires careful preparation.

- The telephone network is almost non-existent in this part of the valley.
- The Refuge des Fonts de Cervières is not open in winter.
- The village of Cervières has a cross-country ski hostel, where you can rent cross-country skiing equipment (alternating and skating), snowshoes, sealskins for cross-country skiing, sledges... Also tourist information and ski pass sales.

Progressing on snow-covered terrain is much more demanding than in summer, requiring special equipment and a thorough knowledge of mountain hazards.

-Consult the weather forecast bulletin
-Avalanche risk assessment bulletin
-Consult guidebook recommendations
-Make sure you have the right equipment, including avalanche transceivers, shovels and probes.
-Choose an itinerary suited to your physical condition
- Never set off alone.
.

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Caution!
We have no information on the difficulty of this circuit. You may encounter some surprises along the way. Before you go, please feel free to inquire more and take all necessary precautions. Have a good trip! 🌳🥾