In the northern reaches of the Misty Mountains lies Carn Dûm, the fortress of the Witch-king of Angmar. Bent upon the destruction of the Northern Kingdom, from this castle he sent his armies to destroy the Dunedain.
This is really nice. I like that you made the fortress look realistic, not like some giant twisted rock formation which rose out of the earth. Just because a fortress belongs to a villain doesn't mean it has to look freaky and alien. Gothic architecture is imposing enough.