Its a great image destroyed by wrong postprocessing.
If I am not totally mistaken there are at least 3 occasions where the local adjustments of toning
are so obvious that they destroy the otherwise gorgeous image.
Fortunately it can be saved.
1. The mentioned Halo
2. The sudden transition between light and dark parts of the sky/clouds in the left part of the image (Though it ~might be natural, it still looks wrong to me).
3. Some trees which are oddly dark compared to others in the lower right quarter of the image
Give the image the love it deserves and it will be great.
I hope this didn't sound too harsh, but after all we are here to learn, right?
I felt I had to "defend" the image since I like it.