Layering terrain

Alright Guys,Me again for questions about my heaven versus Hell map. People are having problems navigating the map, so I have this Brilliant Idea! I'll layer the terrain like in Water wars, or That one everquest map thingy...then I realized...Oh...I have no Idea how to do that. So in short, I nede to know how to layer terrain (Or stack it upon one another in a way that makes only one visible, and both still accesible)so it is very important, So any Help is Great. As always I am taking Hero, Item, Gameplay or any other miscelaneous Ideas for my Heaven Versus Hell Map. Also, an ewname is needed for it. Send sugestions to me on wc3 campaigns, or Just email me at [email protected].
:god_help_us:

Divide ya map into 2 (or more) equal sections.

Make each section represent a layer and terrain so that each point on one section has an equivalent point on the other.

Use triggers to
- Restrict a players camera bounds based on which "layer" they are on.
-Move a player from "layer" to "layer" by checking thier position and moving them to an equivalent position on the other "layer"

yea those maps arent actually "on top of eachother" they are actually all on 1 big map as smaller sections; the minimap is just customized to make you think your on a "layer". like BBDino said divide it in two and use triggs to move the units

Thanks for the help, I'll try that out!