Respect, Bags, that was quite some walk!
We have had a funny week of weather - snow, then sun, then mist, then rain, then frost......brilliant sunshine today and on my walk I could see that the ski slopes had a good covering of snow, but I expect it will come and go several times before the real season starts.
I walked for an hour up a steep path and then across frosted fields -I like the sound of the grass crunching. Some of my usual walks and lanes are impassable at the moment - they are now little rivers of melting snow.
The air here is like wine - the only 'pollution' is smoke from wood-burning stoves, which I like. It must be the same near you, Bags.