The region of Bab Taza is one of those mountainous areas that are experiencing a great dynamic of the slopes. This dynamic is manifested by the appearance of several types of mass movements that are responsible for the degradation and loss of soils on the slopes. To limit these losses of land in space, techniques are used such as: gabionage, runoff and reforestation. Their effectiveness depends on the cartographic expression, which delimits the stable, unstable or precariously balanced zones. After the distinction between stable and unstable areas, the work of fighting against these instabilities begins with the installation of correction techniques based on field work, laboratory and cartographic expression.