sentences:  It is limited northward by Qaemŝahr, westward by Babol, eastward by Sari, southward by the Alborz mountain range and Tehran, and southeast by Semnan province.The main part of this city is located in a valley, in the central Alborz region, where the Tâlâr river passes through it.The tallest summit of Savadkuh, is Arfa- Kuh, with a height of .