Chartres cathedral labyrinth
by Remigho - uploaded on August 24, 2016, 2:46 pm
Designed from sprightlyinnovations.com/leafandleisure/wp-content/uploads/2013/05/EssenceDrawing.jpg
I tweeted to Serina Patterson who is Ph.D. Candidate from the English Department of at the University of British Columbia. As far as she knew, this drawing is free.
However, many versions are available worldwide.