Omega Ruins

The Omega Ruins in Final Fantasy X was a big optional dungeon. Rather Maze-like, unlike many of the other locations in the game, the cave had to be mapped by the player.

A traitor to Yevon, Omega was banished here, and during the long years he was imprisoned, his hatred grew and turned him into a fiendish Weapon, the Omega Weapon. His hatred for Yevon was so strong, he also spawned a lesser Weapon, Ultima Weapon.

Coordinates
To be unlocked on the Airship Map, the coordinates 70x and 39y had to be found using the Search Function.