I also threw together a character model stand-in to get a sense of scale, you might be able to see it in the first screenshot, but let's zoom in...
Ah, there we are, guess that's a pretty large mountain with the current y-scale. Consider this a proto-concept-art shot for one of the two main character models...like a w.i.p. of a w.i.p... there's some Inception joke there, I'm sure.
...and really, what good is a stand-in if it's not made of cardboard.