If the Durin's Bane Balrog destroyed the complete kingdom of

If the Durin's Bane Balrog destroyed the complete kingdom of Khazad-Dum, how is it that Gandalf and Elrond do not know anything about it? Surely at least one surviving dwarf from the

Why did the Balrog choose Moria to hide in, how did he get there unnoticed by the dwarves and how did he manage to get locked under miles of ground? - Quora

The Rings of Power Reveals A Major Lord of the Rings Villain in Episode 7

Durin's Bane, Wiki

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The Lord of the Rings: The Balrog Are Awake In Rings of Power, But How?

The Balrog Durins Bane-borderless, The Lord of the Rings Tales of

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How did Durin's Bane survive the waters under Moria and 'become a thing of slime' when Gothmog died after being extinguished in a fountain? - Quora

Smaug vs. Durin's Bane: Who Would Win in the Ultimate Dragon/Balrog Showdown?

Durin's Bane, Wiki

Why the Dwarves' Mithril Discovery in The Rings of Power Is Bad News