Written for the Fell Beasts "Balrogs" prompt.
Bilbo nods eagerly. "Using many other sources here in Elrond's library – and a few first-hand accounts, of course! Glorfindel was most helpful regarding the passages relating to the Balrog – here, see…"
"The Balrog." Bilbo's companion stares at the text, unable to tear his eyes away. "'Wings of shadow and flame…'" He shudders. "A terror beyond imagining."
"Just think yourself lucky, Legolas," Bilbo agrees, "that you're never likely to encounter one."