|This article is about the Warp navigation device. For other uses of Pharos, see Pharos (disambiguation).|
The Pharos is a pre-Imperial piece of Necron bio-technology that is able to harness empathy to allow the user to find, communicate, or even teleport to a location they either consciously or subconsciously desired, without the use of the Warp. Instead of routing through the Warp, it connected two points directly within the Materium via quantum entanglement. It could also secondarily aid in Warp travel, being used to navigate the Warp much like the Astronomican, except while the Astronomican utilized psychic power to provide a reference point and acted as a "lighthouse" in the Warp; the Pharos utilized empathic energies and would illuminate the needed location, making it appear as a comparative "lantern", which would provide a path to where a ship needed to go. Due to using empathic power, instead of psychic, the Pharos' function was completely unhindered by Warp storms.
Built from Blackstone[5b], the Pharos array was originally constructed by the Necrons for rapid communications and FTL travel. The Pharos is powered by eight C'tan Shards, one of which is Zarhulash.[5a] When the Necrons emerged into their great slumber, the array went inactive. By the Age of the Imperium the only known surviving Pharos was on Sotha. Belisarius Cawl states that he found another Pharos elsewhere, but it was long destroyed. Like most other Necron Blackstone technology, the Pharos is able to negate the effects and presence of the Warp.
The Pharos was discovered by Humanity on Sotha by Barabas Dantioch during the Horus Heresy and used by Roboute Guilliman as a beacon to attract scattered loyalist forces to his new empire, Imperium Secundus. The Pharos became the subject of battle when the Night Lords under Krukesh discovered the nature of the device and became determined to claim it in order to find the Nightfall and Konrad Curze. In the ensuing Battle of Sotha, Dantioch overloaded the Device to defeat the traitors and its engines fell silent for the first time. Unknown to all involved, this act served to alert the Tyranids to our Galaxy.
While Dantioch's sabotage destroyed the primary communications chamber, labeled "Primary Location Alpha", there was a less powerful secondary chamber labeled "Primary Location Beta". Guilliman used this chamber to contact Emperor-Regeant Sanguinius, after the Night Lords had been driven away from the planet.
After the Heresy, Guilliman ordered the Pharos destroyed - removing thousands of tonnes of xenos machinery from the mountain and filling its tunnels with millions of tonnes of ferrocrete. The primarch appointed Oberdeii as Warden of the Pharos and Captain of the Aegida Company, sworn to protect Sotha from whatever secrets had been buried in the Pharos. This duty passed to 199th Company of Ultramarines, now their own chapter and renamed the Scythes of the Emperor after the Third Founding.
Despite the attempts to dismantle the Pharos, the Necron technology of the Pharos activated it's self-repair functions and quietly the Pharos facility rebuilt itself. Millennia later, the formation of the Great Rift reactivated the now fully repaired and operational Pharos, which was noted by the now-reborn Scythes of the Emperor. Archmagos Belisarius Cawl led an expedition to study and perhaps use the Pharos to close the Rift and defeat Chaos.[5b] Ultimately during Cawl's experiments he discovered that the device's core, a singularity, and it's datacore, were both being contained by an enslaved C'tan shard of Zarhulash. Cawl tricked the shard into destabilizing the device's singularity, before using the Pharos to teleport the shard to an unknown distant star system. The destabilized singularity then began to collapse into a blackhole. However, Cawl was able to escape with the data stored within the Pharos, including the location of other Pharos and Blackstone deposits across the Galaxy. The Pharos device itself was destroyed by an Ultramarines strike cruiser before the destabilization could create a blackhole.[5c]
In ancient history, the Pharos of Alexandria, Egypt was an immense lighthouse of its time and one of the seven wonders of the ancient world
- 1: The Unremembered Empire pgs. 30–45
- 2: Pharos (Novel) — Epilogue
- 3: The Heart of the Pharos (Audio Drama)
- 4: The Aegidan Oath (Short Story)
- 5: Belisarius Cawl: The Great Work (Novel) - Chapter 9