This fits the challenge well, but I don't think black and white adds anything to this shot. The centered composition is a bit too much for such a simple subject.
I like how the spring almost lights up and the background is intersting and yet not distracting. Very nice. My only recomendation is that you brighten the horse a little to make it stand out a little more. Nice job
Aha, I really like the looks of this picture... The long backround makes the horse stand out. If you wanted to get rid of some of the noise on the horse you can use Neat Image- it's free.
Nice black and white, especially the strongly highlighted spring. It makes me think of some weird alien lifeforce, especially with the strange landscape. Well done.