Xena Parker 
The tree of Norse mythology, Yggdrasil, was just confirmed to be in Elbaf. This giant tree, that dwarfs the giants of Elbaf has been speculated to be where the different clans of Giants live. This is further confirmed when one of the giants in this chapter, says that if the tree collapse so will all lively hood of the Giants. But is this really Yggdrasil.
The first time we get a glimpse of this tree in one piece, is during the Big mom flashback. We see part of a giant tree dwarfing all the mountains where big mom was abandoned by her parents. The reveal in chapter 1127, was not necessarily a small tree, but for its perspective to be so small, was definitely off-putting. It does not seem that large of a tree. Maybe its the angle at which the shot was drawn, but the tip of a tree as colossal as the world tree Yggdrasil, would be so high up seeing it with the naked eye would be impossible.
This is certainly observant during the big mom flashback where we see part of a tree that dwarfs mountains. These mountains are so tall, Giants in Elbalf are tiny in comparison, so imagine how tall the tree would need to be. The clouds in the stratosphere are literally not scratching the hilt of this monster of a tree. We still know little of Elbalf, so this may well be a play on Oda’s part to hide what is to come in the later chapters of this arc. There is a theory that all this may as well be a devil fruit power playing with the minds of the straw hats, or that green stuff was the real deal and hallucinations are crazy. We won’t know until the arc proceeds to clarify what has been revealed.
