A bit of a physical challenge with the reward of visiting the Esseillon Forts.

Map and points of interest

Let's go


A loop itinerary taking you down to the Arc riverbank on a singletrack path with a few steep sections. You'll then climb up to Aussois via the Esseillon Barrier, AKA the Esseillon Forts.
After following the River Arc on a pleasant track, things get a little trickier on a narrow path with a few steep sections. Rest assured, this is only for a short distance, before another, much gentler track takes you back to Aussois.
The Esseillon Barrier is a succession of five fortifications.
Built during the 19th century on a rocky sill closing off the upper Arc valley (Maurienne Valley) upstream from Modane, the purpose of these fortifications was to protect the Cisalpine area of the kingdom of Sardinia from French invasion. It comprises four forts and a redoubt which bear the names of their contemporaneous members of the House of Savoie. Two of them are listed historical monuments.

Departs from: Resort of Aussois

Period of opening

From 01/09 to 01/11.

Subject to favorable snow and weather conditions.


  • Marked route Marked
  • Itinerary type Loop
  • Nature of the terrain Ground


Free access.

Plus d'infos

Municipality : Aussois
Adress :
43 route des Barrages


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Itinerary overview

  • Difficulty
    Difficulty Level bue - Medium
  • Positive elevation
    Positive elevation 290 m
  • Distance
    Distance 7.9 km
  • Negative elevation
    Negative elevation 290 m
  • Maximum altitude
    Maximum altitude 1482
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