Avalon
From Halopedia, the Halo wiki
Avalon was one of the six continents on the planet Arcadia[1], a UNSC colony in the Procyon System. It was abandoned after the First Battle of Arcadia in 2531 and destroyed by the Covenant in the Second Battle of Arcadia in 2549.
Trivia
- It is most likely named after the island Avalon in Arthurian legend.