The One Ring: Moria: Through the Doors of Durin is an epic campaign expansion that explores the depths of Khazad-dûm for the award-winning second edition of the tabletop role-playing game The One Ring, based on the works of J.R.R. Tolkien.

Set in the years before Balin's fateful expedition, this supplement contains a rich variety of Patterns, Points of Interest, enemies, encounters, and treasures that a Loremaster can use to create their own adventures in Moria – from a desperate journey into darkness to a grand campaign to reclaim the Halls of Durin.

For countless ages, the great city of Dwarrowdelf was the seat of the Dwarf kings, rich beyond measure in gold and Mithril. However, a thousand years ago, Durin's Demon arose and drove the Dwarves out of their halls. The city sank into darkness, becoming a refuge for Orcs, Goblins – and worse.

Indefinite Orcs were lost in the Battle of the Five Armies. Perhaps the Halls of Durin are once again empty. Maybe there are heaps of treasures waiting to be claimed. Perhaps Mithril still gleams in the mines beneath Caradhras. Cross the terrifying threshold, adventurer, and explore deep!