Only the Tír na nÓg (elves) know the true history of The Black Gate. Secrets that not even the immortal Aghori Dwarves are privy to. For they were present when Klume- The floating city and last terrestrial land before the outer dark- summoned the Black Gate, into which Klume became lost.
The Tír na nÓg were the original inhabitants of Klume, before being lost beyond the outer dark within the Folds Of Daydaliss. In time the Tír na nÓg would become creatures of true darkness, gaining mastery over its endless depths and carving out a realm of existence, home to cthonic dark fae creatures. Dark Gods with the power to shatter the very fabrics of reality.