I realized trying to get 3d terrains printed that we are very impeded in the Z axis. If you don't multiply Z by a factor your map will be almost flat. Everest?

I realized trying to get 3d terrains printed that we are very impeded in the Z axis. If you don't multiply Z by a factor your map will be almost flat. Everest? 8 miserable km? Come on, I can do that on the horizontal with one leg (ok, maybe not but you get the point).