Archeological excavations in Qasr'e Shirin in Kermanshah Province (Iran) led to the discovery of 35 historical sites belonging to the Neolithic epoch (6500 BCE) and Chalcolithic period (5000-3000 BCE).
     Two caves were discovered in the southern foothills of Bazidar Mountains, one of them dates back to some 9000 years ago that is Neolithic epoch, and the other belongs to the Middle Elamite period and contemporary to the Iron Age in Zagross and Central Plateau of Iran. A large number of stone tools have also been discovered in a small cave during the excavations. The depth and the opening of this cave are both 6 meters and it seems that it was used as a shelter by the inhabitants of the region. During Iran-Iraq war this cave was used by Iraqi soldiers as bulwark and now the local nomads use this cave to keep their cattle in it,” said Ali Hajbari, head of excavation team in Qasr-e Shirin.
     "Discovery of clays belonging to Uruk period (Early Mesopotamian civilization), and special bowls (special clay bowls belonging the beginning of written language), were the other discoveries in this historical site," added Ali Hajbari.
     Prior to this, archeological excavations in the city of Qasr-e Shirin led to the discovery of the defensive wall of Khosrow Parviz Castle and 35 other historical sites. 40 kilometers of this wall is located inside Iran and the rest of it continues in Iraq’s soil.
     
Sources: Iranian.ws, Pendar (17 February 2006)