I'm sorry guys/gals. I do not think I have been articulating what I have been trying to say.

I think I figured out this latest problem on how to say it:

1. How do I adjust the height of one room different from the others of course and 2. thicken the walls?

3. Also what I want to do is put a garage door on it but to have a sloped driveway.

Wait let me go back a step.
4. I want to sink 30' of the room into the ground, another how do I do that?
E.G: (No not I.E(That is incorrect)) Say I wanted to make a 60' tall room with a wall thickness of 5', for an inground shooting range, basically, the best example that I can give.