" You cannot pass. I am a servant of the Secret Fire, wielder of the flame of Anor. You cannot pass. The dark fire will not avail you, flame of Udun. Go back to the shadow! You cannot pass." Gandalf to Balrog on Bridge of Khazad-dum __________________________ I believe that Anor was ultimately meant to be Aman according to "HoME X, Morgoth's Ring." Any idea what the secret flame is? Also the Balrogs were subject to Morgoth and were never in Sauron's service. You might say that they were renegades after Morgoth was finally defeated by the Valar. Udun is the area between Isenmouth and Morannon in Mordor. Considering that Morgoth's domain was never in Mordor but North Beleriand, why did Gandalf call it "flame of Udun"? Was it because the evil it represents was now in the form of Sauron in Mordor? Sort of a indirect, general association with evil? But if that is the case, why not call it "flame of Barad-dur"?