The mountainous areas of these two western provinces of Iran are very suitable for grazing sheep and cattle. The main weaving centers are in Kurdistan and Sanandaj (the capital of the province once known as Senneh) and Bidjar. In the province of Kermanshahan, only a few centers such as Kermanshah and Songhor-Kolyai produce carpets. The quality of carpets in these latter cities is not as good as those of Sanandaz and Bidjar. In Kermanshah and its surrounding villages most of the rugs are woven in the form of runners and are thick piled.