Nigavellir

Nigavellir, the Dark Dimension, or the Darkrealm, is one of the 9 realms. It is an eternal state of gray and despair, devoid of all natural life. The only beings who populate it are those who are trapped there, or willingly transported themselves there. It is a lifeless expanse of infinite gray land. This realm is the closest a mortal can get to witness the characistics of The Void. All evil souls who are deemed by Farquaad to be dark to be contained in the Nether are sent to this realm via the roots of the tree.