As they explained in the latest chapter, there are 4 location poneglyphs and when they are all brought together on a map Raftel (The end of the grand line & the place the great treasure One Piece is hidden and the explanation for the blank century will be found out) yes, RAFTEL will be visible.. Kaidou has one of the location poneglyphs, Big Mom has one, one is in Zou and the last one is missing.. Who do you guys think has the last one? I bet its shanks and that he also has a copy of all the other location poneglyphs xD