The Nullzone
The Nullzone is a dangerous region of space located in Sector Eternum in Segmentum Tempestus.
Overview
Commonly called The Deadspace in low Gothic, nowhere in Eternum has frustrated Imperial cartographers more than the Nullzone. Officially mapped after the expansion of the Phobox Anomaly revealed a multitude of new worlds and systems though it existed far before, the Nullzone stretches spinward from Blufall, rimward from the Serpent's Tear and borders Orkamedes. Imperial data of the Nullzone is limited to long range augar scans and the frightened tales of crews who claim to have sailed there, with no official record of an Imperial sanctioned voyage ever returning. The Nullzone is lined with the corpses of starships and probes gathered over millenia, and Kalibrasians in particular fear the Deadspace as a den of unknown terror and a constant threat. With this foreboding reputation, Imperial adepts have been consistently puzzled why there has never been a report of hostile action originating from the zone, though Blufall's disappearing population is believed to be related, as is the occasional disappearance of a ship or isolated outpost or town in subsector Kalibras.
There has been no concrete proof any attack has ever originated from the Nullzone. In fact space near the Nullzone is oddly peaceful, with no Ork incursions or threats appearing from the Serpent's Tear. Further complicating issues, the Nullzone is turbulent in the Empyrium causing great difficulties for navigators attempting to plot a course and leading them to making statements even odder than normally made by the Navigators. Officially, the Nullzone is an unknown anomalous region of Eternum marked as a forbidden zone, though there are rumors in the conclave the more xeno-tolerant Inquisitors of the sector have not only explored parts of the Nullzone, but have made contact with Eldar present. If this is true, and the scant Inquisitorial records are correct, the Eldar have a significant webway gate network present in the Nullzone, one they use to keep themselves isolated and safe from prying eyes. Time will tell if their presence is a threat to the Imperium, or their accidental salvation from threats yet to come.