Can you explain what is going on in that second shot. Is it that in the distance there is a mountain and this is casting a shadow towards the camera ? It looks a bit odd tho. I think the shadow is too severe. If the mountain were so far away then the maximum depth of shadow would be that of the grey tint that the mountains to the left of it are producing since they must also be in shadow too. Are you able to set the blackness of the god rays shadow based on the distance to the shadow inducing terrain ? The lighting on those mountains to the left looks great tho.