Much mystery surrounds the believed infinite chasm which is Atla's Abyss.. Said to have been created through the powers of the first avatar of the sea, Avatar Atla, the abyss is rumored to be the lair of Mythia the great dragon turtle. Plummeting far into the earth, even below the cavernous sea trenches of The Sea Realm, Atla's Abyss expands far into the depths of the worlds core. Legend claims that Mythia guards the legendary Seastone within the furthest depths of the abyss.