Tenebra Subsector

Tenebra Subsector is a division of the Caligari Sector in Segmentum Tempestus that contains some of the sector’s oldest worlds. It remains relatively free of warpsurges.

Colonies founded during the Dark Age of Technology and the Great Crusade left the subsector rich in ancient technology. Its core worlds grew while only a dozen systems were lost or cut off. Power then shifted, and Tenebra was overlooked as the wider sector expanded.

The Aethon, Balthar, Chernobog, Dagnor, Lacaon, Nereus, and Rengris systems are still charted under Tenebra as their parent subsector. Reclamation efforts in the late forty-first millennium (M41), together with the return of the Martyr, restored the subsector to Conclave maps.