The tanneries are packed with the round stone wells filled with dye or white liquids for softening the hides. The leather goods produced in the tanneries are exported around the world.[70][71][72] The two other major tanneries are the Sidi Moussa Tannery to the west of the Zawiya of Moulay Idris II and the Ain Azliten Tannery in the neighbourhood of the same name on the northern edge of Fes el-Bali.[4]:220