Bilma, an important town in the Kaouar, owes its peculiar social and commercial traditions to its difficult geographical location. The picture shows a woman shaping "salt loaves", so-called "household packs". In fact, this quantity is used by families as a unit of account, much like the sugar stick, and it is remarkable that consumers often do not know the weight of either. More extensive forms of trade are brought by caravans to Agadez and are mainly used for animals. - Kaouar - Ténéré - Niger - 1968
