Ecrins trekking

Lauzon Lake

3 h
6.8 km
Total Length
553 m
  • By walk
  • Flora
  • Lake and glacier
  • Panorama

Departure : Gioberney, La-Chapelle-en-Valgaudemar

Situated on a plateau at an altitude of 2000 m, the site of Lauzon Lake offers a stunning view of the Gioberney glacial cirque. 

The itinerary of Lauzon is a « condensation » of the mountain: crossing the natural environment perfect for the observation of a varied flora and fauna, belvedere of the lake opening on to the summits and surrounding glaciers.

From the Gioberney car park, ascend towards the North then diagonally left to reach a bit later a crossroads. Take the path to your left which leads up in the direction « lac du Lauzon ». The path crosses scree slope, goes through a small larch forest, stride across the torrent at Voile de la Mariée to wind upwards across a heath composed of rhododendrons, green alders and a short alpine lawn. Come out on to a plateau where a small torrent with marshy borders winds along. At the bottom of the plateau, the lake is revealed at the last moment. After the lake, follow the itinerary with a small ascent, then descend which will take you to some crossroads. Turn right in the direction «Gioberney ». The path follows beside a gorge sometimes zig-zagging to go back to the lower shelf Gioberney. 


Shuttle service from Saint-Firmin in the summer there is a link with the bus coming Gap and Grenoble.


At 26 km from Saint-Firmin on the D58, the D985a until La-Chapelle-en-Valgaudemar on the D480T until Gioberney. 

Information desks

Valgaudemar Park house

Information, documentation and a reception area with permanent and temporary exhibitions. La Maison du Parc is labeled "Tourism and Disability". Free admission. All animations of the Park are free unless otherwise stated.

Ancien Asile Saint-Paul
05800 La Chapelle-en-Valgaudemar

Website - Email - 04 92 55 25 19

Lat: 44.81836, Lng: 6.19371

This trek is within park center, please read access rules.

Clic for map interaction

On the way...
Châlet-hôtel in Gioberney

The construction of the chalet-hôtel at Gioberney started during the Second World War as part of a youth project. It enabled some young people the possibility of escaping obligatory work service in Germany (STO). The stones for the building were taken on the spot, cut and put together using cement mortar. At that time the road to Gioberney did not yet exist, and would only be built in 1963. You had to go up on foot, for « tired intellectuals », it was possible to be helped by a mule in order to reach the refuge. There was not much frequentation until the construction of the road... 

Northern Bat

The Northern Bat is a boreal bat, a glacial relict in the Alpine arc. Adapted to the cold, it resists temperatures close to -7°C for short periods of time. The Northern Bat is a discreet species that lives in boreal forests scattered with humid areas. It sometimes hunts near to public lighting, one of the only places where it is easy to observe it. The capture of females at this site has enabled us to believe in the presence of a colony at Gioberney. It would be the first known reproducing colonies in France.

The different environments

From an altitude of between 1600 m to 2450 m, this itinerary invites you to cross different kinds of environment. Blueberry bushes and rhododendrons on the minerals of the scree slope, the green larch pastures, and this trip will be punctuated by different environments with their specific flora and fauna. 

Lande à myrtilles
Glacial Polish

Glacial polish is a rocky surface that has undergone erosion by a glacier. On the site, it is composed of gneiss, hard massive rock resulting from the crystallization of quartz, feldspar and partially melted micas. Striations enable the sense of the movement of the rock debris set in the ice to be seen. In the fractured parts of the rock, fragments of rock have been pulled off by the ice. This phenomenon is called “sub-glacial cutting”.

« Voile de la Mariée » Waterfall

The Lauzon torrent runs over the retaining wall of the glacier and falls in successive waterfalls into the Gioberney glacial trough across the steepest walls of the Bancs de la Pisse. The lower waterfall spreads out like a bridal veil. The Lauzon torrent merges a few hundred meters further with the Gioberney torrent. This celebrity willingly accepts to be photographed... Its beautiful cascades will provide you with a memorable souvenir. 

La cascade du voile de la mariée
Alpine Ibex

The Ibex was reintroduced to the Champoléon valley in Champsaur between 1994 and 1995. Since 1999, the Ibex have come to colonize the slopes of Gioberney and are slowly progressing towards the bottom of the valley. Some have been observed above the rif du Sap, at Olan and also at the level of Lauzon lake. From the 30 individuals initially released, there is now a population of 300 individuals.

Lauzon Lake

Lauzon Lake is a glacial trough. During the maximum glacier Würm, 10 000 years ago, the ancient glacier dug a basin in the fractured migmatized gneiss by a North-South fault. It is called the « lawn lake » because it is subjected to clement climatic conditions with 4 or 5 months of thaw. In these waters, aquatic vegetation is very present, which translates a large biological productivity.

A look at Lauzon

The site of Lauzon, close and accessible, offers an easy opportunity to live in the mountains... From sunrise, enjoy the view of the Gioberney cirque and the reflection of the Sirac in the lake. It is at dawn and dusk that the site shows it strength with happy suprize meeting with fauna (as long as you know how to be patient and discreet).

Marsh Violet

The Marsh Violet grows, as its name indicates, in humid places and most particularly in the bogs. In Spring, this little violet 5 to 15 cm high flowers with its five violet-grey petals... Like all the plants in humid environments, the principal threat is the education or disappearance of this type of environment. 

Bottle sedge

The Bottle Sedge, with the Latin name carex rostrata is a perennial plant, which means that its growing period lasts several years.. A typical bog plant, it can also live beside ponds. The ear (20 à 80 cm high) is composed of several spikelets, male (at the bottom) and female (at the top). It flowers between the months of May and July.

The transitional bog

The bog is a particular kind of environment, by definition it produces peat. The one at this site is said to be in "transition", which means that it is in an intermediary stage in the process of the bog. This humid, acidic area has the appearance of a spongy carpet of sphagnum, a plant full of water close to the moss family. Because of difficult local conditions only a few insects colonize it, and only those species that are specially adapted: very small mosquitoes and other flies...


Altitude profile

Altitude (m)

Min : 1629 m - Max : 2061 m

Distance (m)