Magonia

Term Vallée used to link fairy and elf folklore with the modern UFO phenomenon, as one continuum.

Magonia is the name of the cloud realm whence felonious aerial sailors were said to have come, according to commonly held beliefs denounced in the polemical treatise by Carolingian bishop Agobard of Lyon in 815, where he argues against weather magic. The treatise is titled De Grandine et Tonitruis (On Hail and Thunder).