Achir

Achir or Ashir is a medieval city in Algeria, first capital of the Muslim dynasty of the Zirids, which ruled under Fatimid suzerainty in the 10th–11th centuries. It is located at an altitude of 4,593 feet in the Titteri Mountains, in the current Algerian commune of Kef Lakhdar.

The city is mentioned by Ibn Khaldun, who indicates that Mount Tetri is the kingdom of the Zirids, in which the ruins of Achir are located. Archaeological excavations have determined the existence of two Zirid sites in this area.

Source: Wikipedia