REGIONAL GUIDE: BIG RIVER takes you west through the Misty Mountains to the Last Cozy House and expands the game into eastern Eriador, covering not only Rivendell, but also Angmar, Fornost, Mount Gram, Tharbad and everything else. find among them. This manual also includes rules for creating your own Magical Treasures, playing the High Elves of Rivendell, luring the evil Eye of Mordor to your company, and facing more powerful opponents than ever.