Original woodcut illustration (17,4 x 13 cm), from: Johannes Praetorius. Blockes-Berges Verrichtung, Leipzig, 1668. (A mirror image appeared in: Albrecht RITTER. Corollarium ad relationem historico-curiosam de iterato itinere in Hercyniae Montem Famosissimum Bructerum... / Reise auf den Blocksberg und der Blocksberg-Legende)
Blocksberg or Blockula was a (Swedish) legendary island where the devil held his Earthly court during a witches' Sabbath. The island could only be reached by magical flight, wherein witches and the taken children would ride fence-posts, spits, beasts (such as goats) or even the bodies of sleeping men. In Sweden, it is, to this day, an Easter tradition for children to dress as witches
