Dude? Wheres my Land?

[Galuf]

Does anyone know why in the latter stages of the game you cannot walk on foot from Fort Condor to Junon?

Where did that piece of land go? I mean I know it shouldn't bother me cause now I have an airship but.....how the hell does land disappear with no in game explanation?

Its an uber geek question I just had to get out of my system at least....

i think it was an area where a Weapon arose