Dear Kathleen,
Thank you for your view/reply on/to this post.
Several photos made from the films - found by both search parties - pose more questions than answers.
In my opinion, these last two photos from the group pose more questions than answers.
Several years ago, I have counted the number of skis and ski poles, but every time I had noted that a few too many skis are visible without bindings.
As far as I know, on all other photos, the skis are visible with bindings.
An example of two other photos that pose similar questions.
Photo from Thibo's camera:
Loose photo:
It looks like both photos had been taken within a few seconds.
The photo from Thibo's camera had very probably taken by Zinaida.
On the loose photo, Lyudmila is not visible.
If I remember well, I have read that Lyudmila had been a competent amateur photographer.
Personally I take into account that she may well had taken the photographer of this loose photo in question.