The Koronus Expanse
The Koronus Expanse is the name given by Imperial authorities to a dangerous unexplored region of the Halo Stars beyond the Calixis Sector The Expanse is accessed through the Koronus Passage, a treacherous but navigable route through the great warp storms that bar passage to the Halo Stars beyond the way station of Port Wander. As is true of the Calixis Sector itself, the Expanse was untouched by the God-Emperor’s Crusade many millennia ago—and so it is a realm of fearsome xenos, treasures beyond imagining, heathen worlds of men, and the echoes of ancient doom.
For centuries, Rogue Traders have braved great evils and the treacherous warp to venture into the Koronus Expanse, but their efforts have barely begun to uncover its secrets. Footholds have been built close to the few semi-stable warp routes into the area. Here, resource-rich worlds are exploited, xenos ruins excavated, trade envoys meet with heathen lords, and colonies are attempted upon sheltered worlds. This effort has been enough to shower wealth and fame upon the fortunate – and make corpses of the rest. The gateway to the Expanse is littered with broken vessels and tales of the vanished.
Beyond these human conflicts lie truly dark and dangerous voids, rife with rumoured terrors, undiscovered stars, and worlds of men who have never known the God-Emperor. There are no defined warp-routes, no safe ways through the swirling empyrean. These regions hold the fearsome Ork, the treacherous Eldar, and strange ruins that lie beneath the light of dying stars.
Subsectors of the Expanse
The Koronus Expanse is divided into the following regions