The Final Road Poneglyph has been missing for ages, Shiryu theorized that it was under world government control but I don't think thats the case
I believe its in the heaven realm and here's why
Lets think about where the other 3 where located
First was in fishman island before Jinbe hand delivered it to Big Mom
Second one was located on Zunesha the giant elephant and home to the minks
Third was found on Wano, the original forgers of the Poneglyphs and home to Toki
And even the normal Poneglyphs where found in places like Skypeia, Alabasta etc etc
What do all these places have in common?
All these places where allied to Joyboy and his forces according to the Harley text
After the war each nation that allied themselves with joyboy was entrusted with a Poneglyph a part of the story
So wouldn't it make sense that the final road Poneglyph be somewhere in elbaf?
Isn't it interesting we've yet to see a glimpse of the heaven realm at all not even in flash back land
I believe that is where the final road Poneglyph is and I also believe we'll see a shrine to the original Nika there
There's a reason why Imu wants to subjugate Elbaf and it isn't just for the giants strength its for that final Poneglyph that tells the you exactly how to get to raftle
So in my opinion the final road Poneglyph is on the highest realm of Elbaf aka Heaven Realm
I believe its in the heaven realm and here's why
Lets think about where the other 3 where located
First was in fishman island before Jinbe hand delivered it to Big Mom
Second one was located on Zunesha the giant elephant and home to the minks
Third was found on Wano, the original forgers of the Poneglyphs and home to Toki
And even the normal Poneglyphs where found in places like Skypeia, Alabasta etc etc
What do all these places have in common?
All these places where allied to Joyboy and his forces according to the Harley text
After the war each nation that allied themselves with joyboy was entrusted with a Poneglyph a part of the story
So wouldn't it make sense that the final road Poneglyph be somewhere in elbaf?
Isn't it interesting we've yet to see a glimpse of the heaven realm at all not even in flash back land
I believe that is where the final road Poneglyph is and I also believe we'll see a shrine to the original Nika there
There's a reason why Imu wants to subjugate Elbaf and it isn't just for the giants strength its for that final Poneglyph that tells the you exactly how to get to raftle
So in my opinion the final road Poneglyph is on the highest realm of Elbaf aka Heaven Realm