Since you asked for critique, I'll try.
Somehow I can understand your feelings about the picture. Everything seems to be there, but the impression you get it somehow strange, at least it is, for me it is, too.
My idea after looking yesterday and this morning again is, that the light is inconsistent in a rather disturbing way. The light to the right/ foreground (in a way the big massif is a foreground, more than the iceberg, which is actually nearer; which is anther little problem) is dramatically different to the light an the left/ background. Everything is different: brightness, contrast, color, structure ... Because of this the big massiv almost looks like cut out and pasted into the picture, looks a bit like a composite. Even sea and iceberg look somehow like a picture on it's own; again too different light. Possibly the processing you did, even enhances this impression, I guess there's quite a bit work on certain areas in it. Hard to tell, but would be interesting, if this is as strong in a less manipulated picture. Or get rid of the color? That warm bright spot on the right is really the first eye-catcher, but not this attractive.
All that said, the picture is interesting on it's own because of these special circumstances. It's not easily accessible, though, it that was what you were after, I had to say, no, this one might not be "the one".
HTH
farbschlurf