Zarathusa Secundus
| Map | Basic Data | Planetary Image | |
|---|---|---|---|
|
Name: | Zarathusa Secundus | 
|
| Segmentum: | Ultima | ||
| Sector: | Unknown | ||
| Subsector: | Ultramar[1a] | ||
| System: | Zagor System[1a] | ||
| Population: | Unknown | ||
| Affiliation: | Imperium[1a] | ||
| Class: | Ocean World[1a], Mining World[1a] | ||
| Tithe Grade: | Unknown | ||
Zarathusa Secundus is part of the Realm of Ultramar and was ruled by sophisticated Human empires, each one operating from vast floating cities, when it became part of the Imperium, during the Great Crusade. At that time, it was the blue jewel of the Zagor System, as its deepwater trenches were rich in fludic mineral deposits and its oceans teemed with life. It was the diversity of the world's marine-life that drew the attention of the Mechanicum and soon its enclaves dotted Zaranthusa's surface. However when the Horus Heresy began, these enclaves rebelled against the Imperium and joined the forces of Warmaster Horus as part of the Dark Mechanicum. This led the armies of Ultramar to arrive and they transformed the island, Aquila Atoll into their base, as it was one of the few Zarathusa islands of significant size[1a]. Composed of the Titans of Legio Lysanda, Knights of House Vornherr and divisions of the Imperial Army, the forces of Ultrmar were able to destroyed the rebellious enclaves. Afterwards they returned to the Atoll, in order to be extracted off world by their fleet, but the Loyalists were instead ambushed by the Chaos Titans of Legio Mordaxis. In the battle that followed, the Loyalists were defeated and large swathes of Zarathusa's surface was corrupted by the toxic liquid, that constantly leaked from Mordaxis' Titans.[1b]
