First Age 455

First Age 455 (abbreviated to F.A. 455) is the 455th year of the Sun of the First Age of Middle-earth. This year is also known as the Fell Year.
Notable events in this year include:
== Winter ==
* The Fourth Battle of Beleriand: Dagor Bragollach (Battle of the Sudden Flame). Morgoth breaks the Siege of Angband marking the end of Long Peace.
* The Ard-galen is destroyed by Morgoth's rivers of fire and is renamed the Anfauglith, the Gasping Dust.
* Glaurung leads forth an army of balrogs and orcs. The Noldor suffer heavy losses and are scattered across Beleriand.
* Finrod Felagund is cut off from the rest of army in the Fen of Serech; he is saved by Barahir. Thereafter, oaths are made between Barahir and Finrod and Barahir receives a ring which becomes an heirloom.
* Dorthonion is lost and its people remove to Hithlum. Celegorm and Curufin are defeated and flee to Nargothrond. Orcs capture Mount Rerir, destroy Thargelion and defile Lake Helevorn; Caranthir removes to Amon Ereb.
* Deaths of Angrod, Aegnor, Bregolas, Hador Lórindol and Gundor.
* Gelmir is captured.
* Turgon, learning of the battle, sends ships to Valinor to ask for aid. No aid comes and few ships return.