Balamutovo village.

The railway embankment proved right what I need. That few is everything I could select from a pile of images taken in various conditions.

Looks like a combination of CPL and skylight, unsure though:

Not too successful example of the ND4 application in counterlight conditions:

An old photo, no filters at all, no .raw, just jpeg:

The valley view. In my opinion, it looks oversaturated, nonetheless, may it exist:

Came too late, from another spot – see here – the lighting was mediocre: 

Just jpeg, almost no way to edit:

...to continue.