wonderful image. in a challenge so full of great images, I never got a chance to come back to this and bump it and give it a comment. fascinating and mysterious, great bold use of shadows.
Its really hard to tell what is going on here. While I really like strong contrast in most images, your darks are a little too dark, while your highlights are nicely lit. This draws the eye to the lit areas of the image without pulling through the entire frame. I also think that you are a bit too centered here. While I am no stickler for the 'rules' of photography, I think offsetting him a bit would have produced a much stronger composition.