Anaon
From Warhammer 40k - Lexicanum
Anaon was a minor hive city on the planet Armageddon, located on the shores of the Tempest Ocean south of Hive Tartarus.[1]
During the Third War for Armageddon, Hive Helsreach faced a secondary invasion by the Orks via the Tempest Ocean. As a result, Imperial officials believed that other hives along the coast, including Anaon, could be subject to similar attacks.[1]
