This aerial trail follows a ridge with some tricky sections. At the summit, the Cassini Cross offers a 360° panorama of all the surrounding peaks and massifs (Grandes Rousses, Aiguilles d'Arves, Taillefer, la Meije, le Râteau...).
This itinerary offers spectacular panoramas of all types of glaciers: domed, cascading or hanging... You'll discover crevasses, glacier tongues, seracs and moraines. If you're lucky, you might even spot a marmot, lammergeier or chamois.
TECHNICAL INFORMATION
Departure point: Col de Sarenne
Ascent: 370 m
Round trip time: 2h15
Return distance: 4.2 km
Level: Medium (a few aerial passages)
MAP AND TOPO
IGN TOP 25 map no. 3335 ET
OBP map no. 2 (Oisans au Bout des Pieds): trail 254c
ITINERARY
Park at Col de Sarenne at an altitude of 1,999 m. From here, it's possible to reach the Croix de Cassini via the ridge. Please note that, although not indicated on maps or signs, this (the most direct) route takes in a number of challenging sections. So, even if the view along the ridge is superb, this itinerary should be reserved for those with mountain feet.
For the uninitiated, it's best to head back down to the road after the pass, on the Alpe d'Huez side, in the direction of the chalets, and take the Col Grange Pellorce path from the Sella (on the left). This route is a little longer, about 1h30 uphill to reach La Croix, but much safer. The marmot, the majestic lammergeier and the chamois will all be there for you to enjoy. At Croix de Cassini 2361 m, all these efforts are rewarded by a unique panorama of the surrounding peaks and valleys.
THINGS TO SEE ON THE WAY :
- La Bergerie du Col de Sarenne
- The Grange Pellorce mountain pastures
SIGHTSEEING NEARBY:
- The village of Clavans en Haut Oisans: its fountains, squares, church and ancient dwellings.
In Alpe d'Huez:
- The Musée d'Huez et de l'Oisans.
- Notre Dame des Neiges church (its architecture, its original organ in the shape of a hand stretched towards heaven and its 13 stained-glass windows illustrating scenes from the Gospel.
WORTH KNOWING:
The Écrins massif is the largest glacial massif in France. From the summit of the Croix, you can understand the choice of the geographer Cassini, who not without reason mapped this part of the Écrins massif in the 17th century from this summit.
In the 18th century, César-François Cassini was entrusted with the ambitious mission of mapping the kingdom of France. He left his name to many peaks, including the Cassini Cross, which he used for his measurements. Cassini maps, drawn over 250 years ago, are as accurate as today's IGN maps.
From 01/05 to 30/10.
Subject to favorable snow and weather conditions.
Oisans Tourisme - 13/03/2025
www.oisans.com
Report a problem
As this route is potentially subject to severe damage due to major weather events and its viability may be uncertain, please enquire before embarking on it.
Phone : 04 76 80 03 25
Email : info-bourgdoisans@oisans.com
Topo guides references :
OBP map no. 2 (Oisans au Bout des Pieds), trail 254c
Map references :
IGN TOP 25 map no. 3335 ET
Reach the Col de Sarenne either via Alpe d'Huez (D211), or via the Ferrand valley (an opportunity to visit the traditional villages of Mizoën, Clavans or Besse).
From the Ferrand valley: head for Briançon, then after the Chambon dam, take the 1st road on the left towards Clavans as far as the pass.
From Alpe d'Huez, follow the signs for the altiport and take the road to Col de Sarenne.
The Écrins massif is the largest glaciated massif in France. From the summit of La Croix, we understand the choice of the geographer Cassini, who not without reason mapped this part of the Écrins massif in the 17th century from this summit.
In the 18th century, César-François Cassini was entrusted with the ambitious mission of mapping the kingdom of France. He left his name to many peaks, including the Cassini Cross, which he used for his measurements. Cassini maps, drawn over 250 years ago, are as accurate as today's IGN maps.
Some overhead passages with cable