Horus Heresy · atlas

World · Segmentum Obscurus

Sebastus IV

Fig. 1 · Location on the map

Sebastus IV is a world where Perturabo raised the “Eternal Fortress” (>32 km² of bunkers, trenches and minefields in the shape of an eight-pointed star) as a trap for the Imperial Fists. The site of the “Iron Cage” (019.M31) of the Great Scouring era. The segmentum is not directly established.

Category
World
Location
Segmentum Obscurus
Significance on the map
2 of 5
Place confidence
Place reconstructed
Events
1 event

Place on the map

The place is reconstructed: the canon does not name it directly; the map places it from indirect evidence.

Grounds for placing the system exactly here on the map:

Russian source notes (1) RU
  • «The Iron Cage… on the world of Sebastus IV in the early 31st Millennium during the campaigns of the Great Scouring» — WH40k Fandom: Iron Cage; Lexicanum: Sebastus IV (сегментум не назван; положение выведено)

Events in the system

Legions

Legions named in the system’s events:

Characters

Linked to the system’s events:

Sources

  1. Lexicanum: Sebastus IV
  2. Lexicanum: The Iron Cage
  3. WH40k Fandom: Iron Cage
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