So we know that Deathwing burst through the Maelstrom from Deepholm to Azeroth's physical plain, and we know that travelling directly into the eye of the Maelstrom, results in travelling to Deepholm.
But how does that work..?
The Maelstrom is located in the Great Sea and is technically water churning in an endless vortex...
So is there a portal in the center?
Or is there a hole?
Howcome Deepholm's 'roof' is almost like a galaxy that seems to go on endlessly...
How does this all work logistically?
I'm fine with portals and magic, but we don't see a portal, which we see pretty much all the time.