I think it's pretty obvious that the fourth and final (missing) Road Poneglyph is located on the (missing) island of God's Valley.
Meaning that the Strawhat's final step before embarking to Raftel will be to locate God's Valley and recover the missing Road Poneglyph.
With Robin deciphering the other three Road Poneglyphs, they will be able to locate the potential location of God's Valley.
What are your thoughts?
Meaning that the Strawhat's final step before embarking to Raftel will be to locate God's Valley and recover the missing Road Poneglyph.
With Robin deciphering the other three Road Poneglyphs, they will be able to locate the potential location of God's Valley.
What are your thoughts?