To be honest, it does have that 'world tree' vibe to it, so it wouldn't surprise me if SE indeed call it Yggdrasil or something similar (after all, the new FFXI expansion 'Seekers of Adoulin' is also including Yggdrasil as an apparent dungeon so yeah).

Quote Originally Posted by Tonkra View Post
The Question is.. there is going to be "Bahamut's labyrinth" and Bahamut as a boss fight maybe also.
So it does mean Bahamut some kind of got imprisoned again? and this labyrinth most likely is in mhor dona then, no?

so maybe this "structure" could be bahamuts labyrinth? or maybe its just something to look at like that structure in 1.0.:

That structure in Mor Dhona is just the wreck of the Garlean airship Agrius still with Midgardsormr's remains entwined around it - it's called the 'Keeper of the Lake' on the Mor Dhona map. It was shown crashing during the Battle of Silvertear Lake in the original opening movie to 1.0, so there's no mystery with that anyway. It's highly likely it will still exist in some form in 2.0 as well.

Finally, that landscape looks nothing like Mor Dhona - in fact, if you look close enough to the right top background in the final few seconds you can make out the foundations to the Crystal Tower. Personally I think this is a whole new zone in the mountain areas north of Ishgard, because I seriously doubt over fifteen years worth of decay and corruption in Mor Dhona can be easily healed in just five years, and after a moon shatters over it and the place is torn up by a very angsty dragon! (After all, if you look at the videos/screenshots for the new Black Shroud the place is still clearly showing the devastation from Dalamud's fall even five years later - if a fully grown forest is still taking time to heal, poisoned badlands will take even longer to recover, if at all).

No, I really think Mor Dhona is still going to be the murky, aether-poisoned wasteland it was in 1.0 in ARR.