Was I right, though, about that one little dude getting eaten alive in the vertical shaft?
By the way, dark colors are supposed to look recessive, right? So shouldn't your cave area be darker than the solid earth surrounding it? As it is, the cavernous areas kind of "pop out" and I think you have to look at it with a deliberate sense of reason to realize what it is. I think if you just glance at it, you don't intuitively know it's a cave.
It just looks generally nice like it is, though, so maybe I'm completely off base.