This region of space is located beyond the furthest reaches of known space, northeast of the Eastern Fringe. This vast tract of relatively unexplored wilderness space was once home to a number of inhabited human worlds. However, an ancient threat, known only as the Pale Wasting in Imperial records, is believed to have been responsible for the destruction of these worlds' populations during the Nova Terra Interregnum. This accounts for the large number of Dead Worlds within the region. The Ghoul Stars region lies beyond the light of the Astronomican, which is used by Imperial Navigators to guide vessels while traveling in the Warp. Without the guidance of this vital beacon, Navigators are unable to sense its guiding light and are forced to navigate blindly. Navigators often refuse to travel into this region for this very reason, for it is extremely hazardous to do so.