Just to add to Mike and Donald's comment; the bright white specular highlights from the river really direct our eyes toward the centre of the image.
I think Donald is quite right; in Adam's work, the mountains and river are more intimately connected; both are tonally similar and the foreground and mountains are positioned in such a way ast to add balance. The other difference is that in Adam's image, the mountains are sharp and clear, just like the foreground, so that we see the integration.