Abstract: The border city in the southwestern side of Afghanistan, and a predominant portion of Helmand block comprises a huge wandering desert, domestic and industrialize opportunity, and a vast varieties of mountains (rocks), among such mountains one is Tur Ghar (Black mountain) at the north, northeastern view of the city, occurred through a volcanogenic activity. Kandahar’s Cretaceous sequence consists of volcanogenic-terrigenous rocks of the geosyncline type. When the Indian plate collided to the Eurasian plate the evidence is Kandahar volcanic at the southern margin of Afghan block.