Tizergan (s tasusit: Tizrgan) d yiwet n taddart meẓẓiyen deg ugraw amagam n treswat i d-izgan deg ugezdu n Ida Ugniḍif di Sus. Tarakalt Tizergan tezga-d gar n yidurar n waṭlas ameẓyan, deg ugafa n temdint n tefrawt yerna teggug fellas s wazal n 50,7 km s ubrid n ttumubil. Imezdaɣ Zdɣn deg-s 32 n middn. Akk imezdaɣen llan d imaziɣen, ttmeslayen akk gar-asen s Tasusit. Tiwlafin Ẓeṛ daɣen Taltemsen Tafrawt Sus