It looks a bit like a color-infrared picture, taken with the wrong filter on the lens.
To really get everything out of it, the original is needed, because it's not easy to take a Jpeg with strong color cast as a starting point. I've made an attempt.
Please, do not consider this as the only or even the best possible way for your image. Of course the easy way-out is: B&W conversion, maybe with a touch of sepia .....
To recover a piece of the original colors, I applied automatic correction, unfortunately a nasty hint of cyan remains in the image, very difficult to extract without spoiling all other colors. For the rest it's mainly a lot of color correction/color adding, curves darker/lighter, saturation and lowering contrast on the right side of the photo.
(I also leveled the image a bit and changed the position of some clouds)
Perhaps these examples offer a bit of inspiration.
Gerard