The site, consisting of a short stretch of the Dora Baltea river and its alluvial plain, is located at a height of 890 meters between the villages of La Salle and Morgex and has a typical vegetation of water-rich environments. On the left bank of the river lies a path of approximately 250 m in brushed concrete, as well as a 220 m walkway in the forest on a catwalk in chestnut.

There are also two educational games: “the tree of the visions” which allows to see the foliage of the trees and to enlarge the pictures and “the ears from above” where there are natural amplifiers of sounds.

Flora: the banks of the dam are thick with reeds, while at some distance from the water arise alders, willows, poplars. Among the flowers, you can find the yellow buttercup.

Fauna: this area is a stop over for migratory birds linked to wet environments; mallards, moorhens and marsh warblers nest here.

Scientific and naturalistic research centre of the Marais
Operational headquarters of the “Regional Museum of Natural Sciences Efisio Noussan” of Saint-Pierre, currently closed for restoration works, the centre of scientific and naturalistic research is in the immediate vicinity of the natural reserve of the Marais, in a building which includes offices, two scientific labs, two classrooms, a library, a reading room and rooms used as an archive and as a for storage for the museum collections.

The Centre is responsible for the management and maintenance of the collections and the library, the activity of scientific research and teaching.
In the museum labs research projects in various areas are developed and promoted, from the study and conservation of the natural and agricultural biodiversity, enhancement of museum collections, as well as educational and training projects.
The library has over 6000 books, from naturalistic texts to scientific and information journals published by universities, scientific and environmental associations, Italian and foreign museums, obtained primarily in exchange with the “Revue Valdôtaine d’Histoire Naturelle”, published by the Société de la Flore Valdôtaine.