User blog comment:Miskos3/Fairy Tail Chapter 367: Jellal vs. Oracion Seis, Review/@comment-4449950-20140121084703/@comment-7418318-20140122080905

Considering how the building in on top of the cube, we don't really know if the thing has it's own pull.

Come to think of it, could it be that this thing actually is some kind of space-time-fold or something and it isn't really present in this dimension? That this cube is just a kind of weirdly shaped portal that connects this other place with Earthland?