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The Telegraphe Pass

Toponymy

The Telegraphe Pass (FR-73-1566) is named after a tower in the Chappe telegraphbuilt in 1807 on the edge of the cliff. The Fort du Télégraphe close to the pass took full advantage of its strategic position above the Maurienne valley.

Geographical location

Massif

The Col du Télégraphe is located in the Cerces massif,

Geology

The Col du Télégraphe road, as soon as you leave St-Michel-de-Maurienne, is dominated to the west by the rocky bar of the Pas du Roc. The lower part of this limestone massif is crossed by the river Arc, which has carved out the Défilé du Pas du Roc gorge. The massif then rises steeply to the Fort and the Col du Télégraphe.

As soon as you cross the pass, the view plunges down into the Valloirette valley. In fact, the torrent dug its bed in the concave part of the folding of the relief under the action of tectonic thrusts, the syncline, while the Fort and pass are on the convex part of the same folding, the eastern anticline.

The Col d'Albanne (FR-73-1652) is located on the western anticline.

The folding described => Openrunner and Open Street Map extract

Hydrography

 The pass is located on a LPE between tributaries of the Arc, including the Valloirette to the west, and torrents tributary to the Ruisseau des Seignes to the east.

Access and neighbouring pass

La D902  relie Saint-Michel de Maurienne (au nord, à 11,8 km – alt. 730 m) à Valloire (au sud, à 4,8 km –  alt. 1430 m) en passant par le Col du Télégraphe.

La D902, dans la descente vers Valloire, traverse le hameau nommé Le Col (FR-73-1522), it is a flank pass listed in the Club des Cent Cols catalogue.

 It lies on a watershed between tributaries of the Valloirette.

The Col - Photo Guy Garcin

Modification of access

L’itinéraire routier lors des BRA 1936 à 1942 (le BRA avait lieu tous les ans) passait par un tunnel qui prenait naissance environ 500 m avant le passage actuel (côté Valloire) et ressortait dans une courbe près de la maison cantonnière encore debout sur le versant vallée de l’Arc. Ce tunnel a été détruit par les Allemands en 1944 (the ARO did not take place in 1943 and 1944). A road over the current pass has been opened. Collapses and vegetation have completely blocked the entrance to this tunnel upstream and downstream, and not even the slightest trace of it can be seen ...

What to see - tourism

A 1 km au nord du col, Le Fort du Télégraphe(rarely called Fort Berwick), is at an altitude of 1,620 metres. It overlooks the Maurienne valley by 900 metres.

This was originally the site of a railway station. telegraphy Chappe (optical telegraphy with articulated arms), located on the line from Lyon to Milan (then Venice in 1809).

The fort was built between 1886 and 1890, and belongs to the Séré de Rivières system.

The fort is open to visitors every summer from July to August, 

Cycling and cycle tourism

The various tests pass over the Col du Télégraphe ... when they pass over the Galibier pass.

BRA 2023 : The Bourbon-Lancy Club (Saône et Loire) - the most numerous outside Isère
(note: the bicycle statue is recent - not in old photos or on the internet)

Profile

Pour le versant Maurienne (11,8 km, D+ : 856 m) : quelques passages à plus de 10 % (en rouge)

And from St-Michel-de-Maurienne to Valloire (Openrunner)

An article by Gérard Galland
and Bernard Giraudeau (for the geology section)