Quote Originally Posted by Hysterior View Post
Start quest in Walking Sand
They might ask you to go talk someone else, not sure (Maelstrom maybe)
Then you need to attune at the Ifrit Crystal Zahar'ka
And it should then be accessible in DF

you will need to do same process for Garuda and Titan, always go back to Walking sands
Quote Originally Posted by Toranja View Post
Go into the Amal'jaa terrority, Zahar'ka, and attune with their aetheryte.

You can guess where it is from this map: http://www.ffxivinfo.com/maps/southern-thanalan.php
Alright I see it now, was confused there because it looked like the whole entrance thing was a part of the Relic Reborn quest line but I got it now, thanks for the help! I'll make sure to check back there for major quest unlocks from now on.