Japanese Twitter user @Kya7y recently posted these pictures of a fiendishly complex and painstakingly hand-drawn labyrinth, sprung directly from the brain of her father (a university custodian).

30 years ago, he started with a blank sheet of A1 paper, seven years later, he’d completed the maze in his spare time, at which point, the sheet was rolled up and  forgotten, until his daughter discovered it.

The maze should, and probably will, be available as a print in the near future.