There are so many aspects of this image that appeal to me, but I think it is the flowing composition and quality of the light that really set this apart as one of your best pieces in recent memory. Excellent rock work and population placement; the sky with it's 'vertical' elements reminds me of the 'virga' phenomena, where you can see the rain leave the cloud with no apparent place where it meets land, and the filtered sun areas really nail the composition! The only part that catches my eye as a little off is the texture of the sheep, could be that they've just been shorn? But that's minor as your arrangement of the sheep and the way they've 'caught' the light is a strong component of this truly fine layout. Excellent work Bob!