The morning sun covers the leather souk in Fes, Morocco. The worker here is removing the soft sheep skin from the stone vessel after several days of processing with natural dyes, in this case poppy seeds to get that beautiful red colour. Before this, the hides are soaked in diluted acidic pigeon excrement for several days to remove the hair and make the skin soft and then is transferred to other vessels containing the vegetable dyes.
The process of turning animal hides into soft colourful products has remained unchanged since medieval times. This is the oldest leather tannery in the world, dating back at least nine centuries.