It is located east of the present-day town of Provadia. The fortress was inhabited successively by Thracians, Romans, Byzantines, Bulgarians, Turks. Its name is associated with the reign of King Ivaylo (1277 - 1280), the campaign of Count Amedeo VI of Savoy (1366) and the campaign of the Polish-Hungarian King Vladislav III Jagiello (Varnenchik) (1444).