Prime Minister Jean Castex relays, in this tweet,
one of our videos made for the SNCF in the Roya Valley! See the clip on the work carried out by the SNCF on the Fontan arcature wall (06)
Drone Air Quality Measurements in the French Alps | AtmoSud
Drone Air Quality Measurements in the French Alps: AtmoSud Winter and Summer Campaigns How can air quality be measured in Alpine valleys, from villages to
drone-pictures
September 23, 2026
