Fes is very well known for its medieval Tanneries. The skins are first placed in vats, to prepare them for the leatherworking process. The skins are placed successively in saline solution, lime, pigeon droppings (the ammonia from the droppings softens the skins) and then in vats containing the colouring agents. Traditionally natural dyes were used, although some tanneries now use artificial dyes. The traditional tanneries get the red colour from poppies, yellow from saffron, brown from henna, and green from wild mint.

Most of the workers work barefoot, and use their toes to pick up the skins from the bottom of the dying vats, then work on them with their hands. Up to 600 skins sit in a vat at any one time, spending up to 2 months being worked on.

Since the animal skins are placed in vats containing pigeon excrement, and often have rotting animal flesh attached to them, the whole area smells extremely bad. When you enter the vicinity of the tanneries, guides and workers offer everyone fresh mint leaves to put under your nose for the duration of the visit.












