During the War of Wrath, Eärendil came out of the west in Vingilot, accompanied by the Eagles of Manwë, and they fought with Ancalagon and the other dragons. Eventually, Eärendil was victorious, throwing Ancalagon upon Thangorodrim and destroying its towers. The fall of Ancalagon marked the end of Morgoth's final resistance.
Gandalf spoke of him as he told Frodo the true origin of his Ring. "It has been said that dragon-fire could melt and consume the Rings of Power, but there is not now any dragon left on earth in which the old fire is hot enough; nor was there ever any dragon, not even Ancalagon the Black, who could have harmed the One Ring, the Ruling Ring, for that was made by Sauron himself."
The Old English translation for Ancalagon is Andracca from and- ("opposition"), anda ("hatred, envy"), and draca ("dragon").
Ancalagon's size is not specified, but it is evident that he is gigantic due to destroying the towers of Thangorodrim, which are also identified as the three smoking peaks of the mountain.
- How Eärendil and other reinforcements including great eagles managed to slay Ancalagon and his kin is logically unknown as simply speaking, there were huge differences of beyond comparing in size and war potential between these dragons and eagles. Even for Thorondor, the greatest eagle of all age. Therefore, eagles and elves could have won against foes because of supports or collaborations from the Host of Valar.
- Gandalf might or might not have seen Ancalagon during the War of Wrath.
|Dragons of Middle-earth|
|Ancalagon | Glaurung | Scatha | Smaug | Gostir|
- ↑ The Silmarillion, Quenta Silmarillion, Chapter XXIV: "Of the Voyage of Eärendil and the War of Wrath"
- ↑ The Lord of the Rings, The Fellowship of the Ring, Book One, Chapter II: "The Shadow of the Past"
- ↑ The Silmarillion, Appendix: Elements in Quenya and Sindarin names
- ↑ The History of Middle-earth, Vol. 4: The Shaping of Middle-earth, III: "The Quenta", Appendix 1: Translation of Quenta Noldorinwa into Old English
- ↑ The Atlas of Middle-earth, The First Age, The Elder Days, "Thangorodrim"