Val-Cenis - Sollières-Sardières

The Chappe telegraph is an optical telecommunications system set up by Napoleon. Located at an altitude of 2000 m on the Paris Milan line in the Vanoise National Park, the Mollard-Fleury poste (or substation) has been restored and in summer regular visits will allow you to discover its operation. Two other substations have also been restored, making it possible to send messages.


These first vestiges, located in Savoie in 2002, have regained all their splendour and are worth the diversion, possible thanks to the signposted routes to the Mollard-Fleury site from Sardières or Aussois. Two other posts have been restored, at Saint-André and Avrieux, and every summer transmissions are organised to discover how it works. A unique event in the world!

Period of opening

From 01/01 to 31/12, daily.
The building is only open in summer.

Additional welcome

In winter, access only by a path from Sardières (1h30 walk), provide snowshoes and sticks.


Free access.


Non accepted

Strictly forbidden: regulations of the Vanoise National Park


By car: from the Maison d'Aussois take the road to the dams.
then the piste des Balmes up to the car park of La Source de Fournette.
Then a 20-minute walk along the forest path.

Let's go


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Practical information

73500 Val-Cenis
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