Higher and more continuous than the Tell Atlas, the Sahara Atlas range is formed of three massifs: the Ksour Range near the Moroccan border, the Amour Range, and the Ouled-Naïl Range south of Algiers. The mountains, which receive more rainfall than those of the High Plateaus, include some good grazing land. Watercourses on the southern slopes of these massifs disappear into the desert but supply the wells of numerous oases along the northern edge of the desert, of which Biskra, Laghouat, and Béchar are the most prominent.
higher and more continuous than the tell atlas the sahara atlas range is formed of three massifs the ksour range near the moroccan border the amour range and the ouled-naïl range south of algiers the mountains which receive more rainfall than those of the high plateaus include some good grazing land watercourses on the southern slopes of these massifs disappear into the desert but supply the wells of numerous oases along the northern edge of the desert of which biskra laghouat and béchar are the most prominent