A series of dark molecular clouds in the Middle Regions, about 800 light years from Sol. Together with the Vulpecula Rift and the Northern Coal Sack in Cygnus, this is part of the so-called Great Dark River.
This dark region eclipses the bright star fields behind, splitting them into two as seen from the Old Solar System. The Rift is mostly in Cygexpa, The Zoeific Biopolity and Keter Dominion territory, although a number of MPA worlds exist on the coreward fringe.
Beyond the Great Dark River lies the former territory of the Biovirate, the Ocean Fleet region and a number of new start-up empires in the Outer Volumes.
Great Rift, Great River - Text by M. Alan Kazlev Series of dark, obscuring dust clouds in the Milky Way Galaxy. As seen from the Inner Sphere, These clouds stretch from the constellation Sagittarius to the constellation Cygnus.