ISNA | Farzad Zanjirdar: Oshtoran Kooh is a massive sub range of Zagros located in Lorestan province about 500km far from Tehran, about 18km south-west to Azna city. Oshtoran Kooh is a long straight ridge line with the natural north-west to south-east orientation of Zagros range that expands to Chagha-Gorg area at south.