mountains were the feudal seats of the Bavand dynasty, with which the Karan-Vands were allied. They defended the area against the invasions of the Amawid and Abbasids and tried to preserve their Zoroastrian religion and culture. The existence of numerous fortresses and military fortifications that date to the 8th–10th centuries vindicate this claim. In addition, Lajim tower with its 10th century brick-face inscription in Pahlavi script demonstrates the attention of the Savâdkuhs to the script, language and customs of their ancestors. The population of this region composed many poems, describing the heroic efforts and bravery of their notables. Administrative divisions The population history and structural changes of Savadkuh County's administrative divisions over three consecutive censuses are shown in the following table. The latest census shows two districts, four rural districts, and three cities. Human geography Having 250 seasonal and permanent villages, the language spoken in Savadkuh is Mazandarani. Its native inhabitants are Shiite Muslims. The farmlands in Savadkuh are limited because of its large forests and mountainous areas. So the farmers use their crops themselves, including rice, wheat, barley and sugar cane. According to geographical features, the economy of this city is based on apiculture and animal husbandry, more than agriculture. Language The languages spoken in Savadkuh are Mazandarani and Persian, for the major part; and Mazandarani and Persian for the inhabitants of the villages. Natural attractions The most important natural attractions of Savadkuh are: Ŝur Mast lake, near a village by the same name, Gazu waterfall in Lafur hamlet, waterfalls of Shirga and Gaduk, the mountains of Arfa Kuh, Sangar and Qadamgah, in Rassto Pei hamlet and Shervin mountain in Valu Pei hamlet; and Alasht city. Historical sites and landmarks Veresk Bridge The Veresk Bridge is a masonry arch bridge in northern Iran. It was constructed mostly by Austrians before World War II by leadership of an engineer named Walter Aigner, constructed during the reign of Reza Shah. It is located in the Veresk district of Savadkuh County, in Mazandaran province. During World War II, it was known as the Pol-e Piroozi ("The bridge of victory"). The bridge stands tall and its arch measures long. The bridge serves the Trans-Iranian Railway network in Northern Iran. The Veresk bridge connects the railway between Tehran and the Caspian Sea region. It is located in Mazandaran Veresk district of Savadkuh, 85 kilometers south of Ghaemshahr and connects two of the mountains in