Great variations of color and layers in the mountain ranges. I think that this photo could have been greatly improved by focusing on the foreground more. I believe that the general rule in a situation like this is to focus one third of the way into the photo which would probably be the second ridge back (the red one with the shadows). This would have probably kept the foreground ridge in enough focus and if anything were to be out of focus it would be the background ranges and that would have been a little better for this shot.