Allow me to introduce a variation I pulled from your color file.
I flipped it to make it comparable to the b/w file.
I made 2 different color adjustments and blended these - sky was converted differently than the lower part.
I also used a local curves on the bright path in the front.
For a final version I might to it a little bit brighter, but I'll stop here and keep the surreal look.
Cheers
~Chris