just thought of this, We all know that the Fall happened when the twins were battling. It was also said in the books somewhere, that they were battling on top of the pyramids. what if they battling from different ends of the island? it was not specifically mentioned which pyramid but there are a number of them across the world. what if one twin was in Egypt, the other was standing in an Aztec pyramid? I know the pyramids are dated only a few millennias old but is pluasible that they are much older that we know? with the kind of power the twin weild and standing on top of pyramids on opposite site of the island, that would cause massive distruction, enough to cause it to sink. yes, it's farfetched, i don't know where i got it from exactly, but it may imply that the original twins did not fall with Danu Talis.