Tiaret (Tahert; Ar. Tāhart, Tīhart; Ber. Tagdemt) is a city in western Algeria, on the site of ancient Tingartia, located at the southern foot of the Ouarsenis Mountains in a pass of the Jebel Guezoul, at an altitude of 1,375 meters (4,511 feet). It was founded in 778 by the Ibāḍī Rustamid imāmate as its capital. Jews settled in the lower town and the community developed with the rapid growth of Tahert (this name will be used in reference to the premodern town) until the Fatimid conquest in 909. While the c…