I'll use your post to segue into discussing the ground features in the pics.
The pic with the photo plane's wing: it looks like someone had a burn pile recently. Also, given the angle of the ash fallout spread across the snow and in reference to section lines I'd say the winds were either SE or NW at the time.
In another pic it appears there is a small aprt in the middle distance, somewhat parallel to direction of flight.
In all honesty, I am enthralled by the notion of flying in severe clear above a fresh snow fall. In fact, it made me just stare at the background scenery which I suppose I would do if flying in those conditions.
It is cool no doubt... (You've done that, haven't you Richard ?)
But for me, when the pretty white snow is covering hugely crevassed icefields &/or mountain ranges that are miles from anywhere and that can eat and slowly freeze airplanes and pilots all day long without even getting tired, I like it a good deal better when it's behind me as another spectacular flying memory survived !
