The Dwarves of the Blue Mountains were the descendants of the original Dwarves of Nogrod (Firebeards) and Belegost (Broadbeams), the two great Dwarven cities of Beleriand. After the destruction of both metropolises with the drowning of Beleriand, many Blue Mountain Dwarves had left their ancestral homes and spread to the Mountains of Angmar or into Enedhwaith, while others had attached themselves to their Longbeard brothers at Khazad-dûm. However, with the fall of Khazad-dûm and later the loss of the Dwarven Kingdoms of the Grey Mountains, many had returned to the Ered Luin, and also were joined by several clans of Longbeards who had fled from Erebor after it had been devastated by the Dragon Smaug.
Other holds[]
- Blue Mountains Dwarf Holds
- Ered Luin's Dungeons
- Barazbizar (Carn Dûm)
- Zarak-Dûm
- Barûk-Zigil (Mount Gram)