Into that Vast 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 the passage to the Halo Stars beyond the way station of Port Wander.
The region is only partly charted, containing a few young colonies and vast natural wealth still barely explored. Rogue Traders vie with one another for known resources, heedless of lives lost in the pursuit of riches, while a tentative attempt at Imperial colonization follows in their wake.