Remember the intro? Link walked through one of those weird twisty hallway things from the Forest Temple...
That means.. it's entirely possible.. that TERMINA IS THE UPSIDE-DOWN WORLD ON THE OTHER SIDE OF HYRULE!
How do I know hyrule is flat on the bottom? In Ocarina of Time, i stood on a very high place and looked over the 'walls' and saw that the sky was a mirror image below a certain point!

Just TRY to argue.
