This is also a level with a main center section surrounded by two hallways. If you attempt to go north on the red carpet, get ready for a hairy battle with an Olog-Hai, a sorcerer, and a Nazgul. After this battle is over, you can approach the throne, but, again, I found nothing! The stairs up are at the northeast corner, but you can't get up them because of an invisible lock. Time to USE the red key you found. Take the stairs up to level 10.
You will finally come into confrontation with the evil Witch King himself. He is attempting to fly off with Frodo. Use the THORONDOR word of power, and a group of eagles will attack the Witch King. He can't fly away now, but he is ready to fight. After a lengthy battle, you have finally completed the game! You will be treated to a fun endgame sequence telling you what is going on in the world since you got the ring back.