© Benoît SAGE / Délégation Alpes / CNRS Images

Toiture de l'observatoire Vallot dans le massif du Mont-Blanc



Production year


Max. size

17.34 x 13 cm / 300 dpi


Employees on the roof of the Vallot observatory (altitude: 4.350 m) in the Mont-Blanc massif in the French Alps, in 2011. They are surveying the roof prior to repairs. Built by Joseph Vallot more than a century ago, this observatory was subsequently donated to the French State by the Vallot family in 1931, and was transferred to CNRS in 1975. In 2016, extensive renovation work was carried out at the observatory on Mont-Blanc, to improve the standard of accommodation. This work included building an extension as well as repairs to the siding and roof. This very high-altitude facility, the only one of its kind in France, is used as a base for glaciological and atmospheric research, as well as research into physiological adaptation to high-altitude conditions.

Regional office(s)

Scientific topics

CNRS Images,

Our work is guided by the way scientists question the world around them and we translate their research into images to help people to understand the world better and to awaken their curiosity and wonderment.