dauguerro? (something like that...)

you get the airship, and it is on an island with mountains on top, with waterfalls coming outside near a cave. the cave between to waterfalls on a mountain side is dauguerro. its located near the chocobos lagoon, but on an island near it and a qus marsh. i think thats the most of an explanation i can give...

SE of forgotten continent i think.