The Primordial Dream is the realm of humanity's collective nightmares and the home of the Horrors that define a Beast. It is related in some way to Temenos, the part of the Astral Space that represents the collective unconscious. The Horror and its Lair exist in the Primordial Dream, and Beasts have innate ability to use any existing supernatural portal or gateway to access the Primordial Dream (even if that gateway normally leads somewhere else, such as an Avernian Gate).