Group 11 of Villard-de-Lans.
VILLENEUVE Jean Marc is the second person sitting on the roof.
"SES ROYBON ..E AVANT" is written with iron wires (not sure of all the letters and missing part of the message).
On the other hand, we can affirm that there were Skier Scout Sections within group 11.
Roybon is the name of this sheepfold.
France
Chantiers de la Jeunesse française
between the 1941-11-05 and the 1942-06-05,world war two