In the twilight of the Third Age, three realms of the West-elves still endure in Middle-earth. By the power of the Three Rings, they exist as a testament to a time that was. But not only the Elves remember. As Sauron gathers his strength to bring war to Middle-earth once again, he plans a devious vengeance against those who humbled him long ago. Realms of the Three Rings™ is a supplement for The One Ring™, the official tabletop roleplaying game based on the works of J.R.R. Tolkien.

• Chapter 1: Where The West-elves Still Linger describes the realms of Lórien, Rivendell and Lindon and those who dwell there, including the Elf-lords who are their guardians.
• Chapter 2: The Days Darken provides the Loremaster with details about Sauron's schemes against the Immortal Folk, including possible events, Adversaries, and Loremaster characters.
• Chapter 3: Landmarks outlines twelve sites of interest, including locations mentioned in The Lord of the Rings™ novels, as well as others created specifically for the game.
• The Appendix contains rules to play High Elves and Wood-elves, and introduces guidelines to create Elf-lords, powerful characters who can reach level 20 and are therefore suited for epic level play.
• Fully illustrated hardcover volume.