People refer the place Squall was in the end of the game as a "desert".
To me it looks like a dry plain.There is no sand.So it couldnīt be Dingo nor Kashkabald.
To me it looks like the Esthar soil.Wonder how people didnīt noticed it before.
I always see it as Esthar soil (or at least Mordred plains soil).
It canīt be Galbadia nor Winhill,nor Centra,nor Trabia,nor Balamb nor Grandidi.
Rinoa was in Centra (flower field ) and Squall walks on Esthar/Mordred like soil.
In the beggining of the game I am sure it was Esthar soil only.