The stabilization of unstable and slippery zones requires the collection of accurate information from various aspects about the unstable zone. Geophysical studies are responsible for obtaining basic quantitative information about the dimensions and geometry of the layer, the geology of the area, the status of possible water flows, and the like. Geophysical studies on unstable zones are mainly done using geoelectric methods. One of the most powerful methods in the geoelectric range is the two-dimensional electrical tomography method. Electro tomography is performed using different electrode arrangements. The sensitivity of this electrode arrangement to abnormalities causes this arrangement to be used in electrical tomography to study unstable zones. In this study, the slip range in the Gohar-e-Zamin tailing dam No. 1 was studied by two-dimensional electrical tomography using polar-bipolar and bipolar-bipolar electrode arrangements, and the geometry of the dam failure was estimated..