Agadez, the last town before the Tenerè desert. Four houndred flat kilometres of sand. On the other side, Bilma and its salt mines. The Touareg and their camel caravans and Tebu women. During the winter, the Azalai leaves the mountains to cross the desert and reach the oasis to buy salt and dates. For thousands of years this had been a flourishing commerce. Today, because of cars, tourism, immigration, civilization and war, the caravans are smaller and very few. But they still accomplish this trip through the sand.