Hollow Zero/Lore

==Overview==
Hollow Zero is what brought the old capital Eridu to its end. Despite the best efforts of the inhabitants, the Hollow expanded relentlessly, engulfing the city and those who lived in it. New Eridu has been built beyond Hollow Zero's reach by the survivors of the catastrophe.
Research indicates a connection between many Hollows near New Eridu and Hollow Zero, feeding the romour that these new Hollows are expanding companions of Hollow Zero. Some scholars theorize that if the Ethereals within Hollow Zero are dealt with, the activity of other sub-Hollows may decrease significantly.
To prevent a recurrence of the old Eridu tragedy, or perhaps for other undisclosed reasons, the authorities of New Eridu regularly send Hollow Investigation Squads and other organizations to investigate and suppress Ether activity within Hollow Zero.