Classification and typology of potteries from the 3th season of Bisotun’s bridge excavations

The Bisotun plain is one of the most important areas in western Iran where archaeologists have discovered many sites and monuments from prehistoric to Islamic time. During the Sassanid period, many During the Sassanid period, many works were established in Kermanshah were established in Bisotun region. The German and Iranian archaeologists have dated Sasanian buildings and monuments to the reign of Kosrow II (590-628 A.D). Bisotun plain is located along an important military and trade route connected the western and eastern parts of Sasanin empire. Obviously it is necessary to build huge bridge on two permanent rivers of the area (Gamasiāb, Zardāb and Dinavarāb) for military and trade proposes. Bisotun’s bridge or Pol-e Bisotun, Pol-e Khosrw and Pol-e Ghozivand are Sasanian bridges in Bisotun that left unfinished without clear reason at that time. Bisotun’s bridge is located on the north east of the city of bisotun, on the Dinavarāb River. This briadge is 144 m in length and 7/60 m in width, including bases, openings, backups, passage and floor. Three bases have rectangular profile while the others bases have triangular cutwater, inside part of the bases have made of rubble and mortar, the façade has made of stone blocks, put on each other precisely. Based on the typology of the pottery, the potteries found at Bisotun’s bridge can be subdivided in four primary groups: plain without glaze, decorated without glaze, monochrome glazed and polychrome glazed, then they were divided into diverse kinds. The pottery pieces belong to the restorers groups of this bridge and nomad groups in the Ilkhanid period. The potteries of Bisotun᾽s bridge compare with pottery of other Islamic sites for example Ilkhanid Caravansary in Bisotun, Mongol building on the bank of the Gamašāb (Bisotun), Sultaniyya plain, Samen, Ojan, Zolfaabad Site , Hasanlu, Takht e Suliman, Zino Abad, Arzanfud, Hegmataneh, Tahyagh (Markazi province), Asavehe, welab e Famenin, Ban Zardeh, Neyriz Plain, Kul tape, Siraf, Nishabur and Anda-jin .