Perthro is the rune of the unknown. All the records of all events are stored here, so it’s power helps the recollection of knowledge that is hidden within the collective unconscious of humankind, especially human lore lost over the course of the centuries. The same process is responsible for prophecy. Perthro will assist the birthing of a great idea into your environment by raising awareness of the forces arrayed against its manifestation. Co-incidence and deja vu play an enormous role in the recognition of the fundamentals of this rune.