Mysterium Magnum

Mysterium Magnum (“The Great Mystery”):

[1] Name of an unexplored region, located on the side of the Obscure World opposite to Armilia, equivalent to the South Pole 1).

[2] Title of a book in the library of Elias Aureolus Palingenius 2). It is maybe related to the book written by Jakob Böhme in 1623.