Vignette is a bit heavy for me on the left hand side and I feel the image would look better with masking of this vignette both to the left edge and the right edge. Good moody mono though and a location I have visited once but it was pouring with rain.

I am not a fan of this composition due to the tree bisecting the mountain - but in this case the composition does work well with the light on the mountain - too many images have a black mountain due to over-gradding. What lets the image down a touch is the blown out sky top left as well as another tree breaking the horizon line left of frame and I wonder if a 10x8 crop to lose the left of frame which is blown out would strengthen the image. As others a great range of tones and the tree cutting the mountain cannot be helped from this viewpoint so all in all one of the best I have seen (with the crop) due to the superb lighting on the mountain. Cheers, Martin