Magonia

Magonia is the mythical cloud-realm of medieval French folklore, home to sky-ships and their crews, from which storm-bringing "tempestarii" were believed to summon hail down onto crops — a nearly thousand-year-old legend that computer scientist and ufologist Jacques Vallée revived as the title and central metaphor of his landmark 1969 book "Passport to Magonia." Vallée's argument was that fairies, religious apparitions, and modern UFO occupants are, structurally, the same recurring phenomenon described across different centuries in whatever explanatory costume each era's culture supplied — sky-ship sailors in the Middle Ages, angels in an earlier religious framework, extraterrestrials wearing chrome and rivets once the Space Age arrived. The book systematically catalogued centuries of fairy-abduction, apparition, and folklore accounts alongside contemporary UFO reports, showing structurally near-identical elements: missing time, physical marks, non-human beings, and messages delivered to the witness. "Magonia" became shorthand within ufology for this entire comparative, folklore-continuity approach, standing in direct opposition to the straightforward extraterrestrial-hypothesis reading that dominated American ufology through the 1950s-60s. The framework directly informs UFOMYST's own "interdimensional hypothesis" and "changeling" entries, and remains one of the most intellectually influential single books the field has produced, cited by researchers on both the believing and skeptical sides of the debate.