On the internet I found this description quite detailed ...
In Las Pellousieres di Oulx there is a chapel dedicated to the Madonna della Neve. The exact date of the chapel's construction is unknown; the hypothesis is credited that it may have been founded in the second half of the eighteenth century by the Perron family by vote or grace received. This family, owner and custodian of the building, emigrated to France in Grenoble in the mid-1900s, and the chapel was almost forgotten, after being stripped of its few interior furnishings.
Fortunately, in the years 1987 - 1988, as evidenced by a wooden plaque placed on the front of the building, it was restored and enhanced thanks to the will and commitment of the Friends of Don Dosco di Oulx. In those same years it was entrusted to the care of the Salesians who are still its custodians. An original painting inside, depicting N.S. Madonna della Neve and Baby Jesus… dressed as skiers.
The chapel, extremely essential in its architectural lines, is located far from the houses, almost hidden by a dense coniferous forest, and can be reached during the winter months along the cross-country track on skis and in the summer by walking along the shady path that leads to the locality that hosts it.