The rhythmical secret of the medieval labyrinth

 

The elementary rhythmical motif (example of the Chartres labyrinth)		The triple repetition of the rhythmical motif
The rhythmical structure of the Medieval labyrinth comes from the repetition of an elementary rhythmical motif. The Sens labyrinth has the same structure as the Chartres labyrinth, but its path sequence is different because the arrangement of its "key" (the region around the entrance axis) is different and determines a different visiting sequence. Some other medieval labyrinths, among which the Reims labyrinth, have a slightly different rhythmical motif (which is of a folded instead of spiral form). I have called "canonical" the labyrinths which have these three rhythmical figures with a rhythmically reversible path. 20 are possible. Only those three (Chartres, Sens and Reims) are known to have existed historically.