The Abyss

The Abyss, of Pandora's Box. 
The deepest depth in the whole of Pandora's Box. Hitherto unheard of during the time of Fionn Corvin, Death, Aether and Hope's imprisonment in the box- it was first discovered by Mephistopheles. Dark and forboding it represented a great, unknown fate for any who would enter...
First appeared in Season 4.
Season 4