Very cool shot. Although I like the lighting, I find myself wishing I could see more details of the tunnel. It appears cool and damp and is contrasted with the rays of light filtering in through the gates. I like the overall composition of the shot. Good Job
As long as you could keep it recognizable I think that having the shadow of a person in a fetal position against the bars or at the end of the tunnel would have added an extra punch to this strong image.