A great deal of folklore surrounds fairy rings. Their names in European languages often allude to supernatural origins; they are known as "ronds de sorcières" ("witches' circles") in French, and "Hexenringe" ("witches' rings") in German. In German tradition, fairy rings were thought to mark the site of witches' dancing on Walpurgis Night, and Dutch superstition claimed that the circles show where the Devil set his milk churn. In Tyrol, folklore attributed fairy rings to the fiery tails of flying dragons; once a dragon had created such a circle, nothing but toadstools could grow there for seven years. European superstitions routinely warned against entering a fairy ring. French tradition reported that fairy rings were guarded by giant bug-eyed toads that cursed those who violated the circles. In other parts of Europe, entering a fairy ring would result in the loss of an eye. Fairy rings are associated with diminutive spirits in the Philippines.