Ending, plot discussion. Warning: Spoilers

[Jacien]

I have a feeling the Garlean Empire knew about Bahamut and had a method ready to contain him.

According to Cid, the Meteor project is a complex scheme employing arcane magicks and lost Allagan technology to summon the lesser moon Dalamud-a giant machine, if his claims are to be believed-down to Eorzea in an attempt to annihilate all of the beast tribes in one fell swoop. Seemingly in conjunction with the project, Legati Gaius van Baelsar and Nael van Darnus are currently searching for relics known as "tomestones" said to contain records of the past, despite the fact that Ironworks studies have shown these items to be worthless...

Wasn't there a tomestone or something in the Limsa quest that was used to contain Leviathan?

[Valmonte]

I have a feeling the Garlean Empire knew about Bahamut and had a method ready to contain him.



Wasn't there a tomestone or something in the Limsa quest that was used to contain Leviathan?

leviathan was chained/bound to an island called Seal Rock by Llymlaen -The navigator.

there was also the "key" it was some type of horn, same one used in the uldah story by the looks of it. however it doesn't appear to be related to Leviathan.

there are also severe timeline issues in Limsa's quests, which make alot of stuff hard to follow

for instance during the very beginning when your on the boat you meet stahlman fighting the jellyfish, so either the whole boat ride was a flashback or there are timeline issues.