The Bridge Of Khazad-dum

[Knight of Gondor]

That's just as big as the movie Balrog is! The book describes it as drawing to a great height (I read the passage after responding to this post earlier), but it was not so tall that Gandalf could not deliver a blow to his chest in The Two Towers. (I refer to the movie here, chiefly because I really liked it, and want to defend the images expressed therein)