First off can any one come up with possible solution of how Ridorana Cataract can exist geographically in relation to the planet. If its just whole in the sea...Wouldn't it be filled up after sometime... Where does the sea water flow..Unless the place where FFXII is located is actually on a higher elevation therefore the size of the planet would actually be larger to accommodate this kind of anomaly.
Here's an excerpt from the Sage's Knowledge
"A strange opening in the seafloor that has created an endless whirlpool, drawing the surrounding sea ever downwards. An island is situated at the cataract's edge, on which stands a great pharos surrounded by ancient ruins. Its size suggests that once a great city flourished here, but of its rise and fall nothing is known. The area surrounding the island is jagd, preventing approach by airship, while the proximity of the cataract and its tidal pull make it impossible to reach the island by sea."
Also in relation to the map and travelling between places of Ivalices....How many days would it actually take to travel between certain points...