What Allerion said. This version looks better, and I like the textures you are using for the cavern. However the entire cavern appears to me to be floating over the floor. I think this is in part due to the fact that you are using different (non-blended) textures for the cavern and for the floor, and also in part because the lighting isn't consistent. Judging from the bevel you've placed on the caverns the lighting appears to be coming from the northeast, but you have shadows at the base of the caverns where they meet the cavern floor, making it appear as if the lighting is coming from directly above (in which case the lighting settings for the bevel don't make sense). Hope that helps.

Cheers,
-Arsheesh