The Encyclopedia of Arda - Khazad-dûm

The grandest and most famous of the mansions of the Dwarves. It lay in the central parts of the Misty Mountains, tunnelled and carved through the living

The Encyclopedia of Arda - Misty Mountains

Hall of Beorn

Narvi, Craftsman of the Doors of Durin Tolkien's Legendarium Character History

What is the most interesting thing about Middle Earth that remains kind of unexplored? - Quora

Council of Elrond » LotR News & Information » 2.05.*b The Bridge of Khazad- dûm

Maps of Middle-earth: The Second Age

Dunland, The One Wiki to Rule Them All

Hall of Beorn

The Encyclopedia of Arda - Mirrormere

Narvi, Craftsman of the Doors of Durin Tolkien's Legendarium Character History

Inside Middle-earth: The 7 Dwarf Realms - Khazad-dûm, by Alejandro Orradre

The Encyclopedia of Arda - West-door