Zagros Mountains

Mountain range in southwestern Iran, extending northwest-southeast from the Sirvan (Diyala) River to Shiraz. The Zagros range is about 550 miles (900 km) long and more than 150 miles (240 km) wide. Formed primarily of limestone and shale, the mountain range consists of numerous parallel ridges whose highest peaks rise above 12,000 feet (3,600 m) and have permanent snow cover. Passes through the mountains