Semnan province is located on the southern slopes of the Alborz Mountains And the height has decreased from north to south and the desert plain ends. . Alborz mountain range in this part of the is West to East direction. . The altitude to Hablehrud In the West With the North West to South East,

While in the East River Altitude along a southwest to northeast direction. Mountain ranges in the north of the province is considered the main sources of the rivers and subterranean of the province and its different regions . Forms characteristic of the normal operating conditions created an altitude Centers located in urban and rural areas have relatively high. Minerals are found in geologic formations of the area is an important contribution to economic growth.Semnan province were include 7 townships of Garmsar, Aradan, Semnan, Mahdishahr, Damghan, Shahroud and maiamey.