Adventures in Middle Earth: Rivendell Region Guides - Rules of Play says:
The Rivendell Region Guide takes your adventures West across the Misty Mountains to the Last Homely House, expanding play into eastern Eriador, covering not only Rivendell itself, but Angmar, Fornost, Mount Gram, Tharbad and everywhere in between. There are also rules for creating your own Magical Treasure; playing High Elves of Rivendell; turning the baleful Eye of Mordor on your company; and facing more powerful adversaries than ever before.