• Cultural

Coded message transmission

A unique historical event in the world. As it was 200 years ago, coded messages were transmitted between the three historic stations of Mollard Fleury in Sardières, Courberon in Avrieux and Plan de l'ours in Saint-André. 3 runs : 11h-13h30-15h.

Cultural Coded message transmission Val-Cenis


On Sunday 05 June 2022 from 10:00:00 in 17:00:00
Val-Cenis (73500)
Animals allowed

At the French Revolution, information circulates to the rhythm of horses. On July 12, 1793, faced with the military threat and the lack of rapid means of communication, the Convention accepted the proposal of a young physicist, genial inventor, Claude Chappe, to set up an optical telegraph system. The Chappe telegraph was born.
Between 1806 and 1814, the telegraph of Saint-André is one of the 33 positions of the line Lyon-Turin. The Milan system is used on the Bear Plan post. The manipulator placed inside the "barracon" controls the regulator and the 2 indicators.
The post is held by 2 stationary. The works begin at least 15 minutes before sunrise and end at the end of the day. The signals are formed by the geometrical figure composed by the regulator and the 2 indicators.
In 1845, the national network has 535 stations spread over 5000 km and serves 29 cities. The Bear Plan site was refurbished in 2010, it functions as in 1807.

During guided tours, you will learn to code and decode messages, as in 1806.


Free of charge.
Group rate available for > 8 people.

Methods of payment accepted : Check, Cash


Animals allowed
Languages spoken : English, French, Italian
Languages of documentation : English, French, Italian


Sunday 5 June 2022 between 10 am and 5 pm.
15th national day of the Chappe telegraphic System.

Sunday 17 July 2022 between 10 am and 5 pm.

Friday 5 August 2022 between 10 am and 5 pm.

Sunday 18 September 2022 between 10 am and 5 pm.

  • Pets welcome


Pitch Sardières Sollières-Sardières 73500 Val-Cenis

Summer: by car, from the Maison d'Aussois take the road to the dams
then the Balmes trail to the Source de Fournette car park.
Then 20 minutes of walking on a forest path.
In winter, access only by a path from Sardières (1h30 walk), provide snowshoes and poles.

Information update on 12/05/2022 by Haute Maurienne Vanoise Tourisme