Dena (in Luri and Persian: دنا‎) is the name for a sub-range within the Zagros Mountains. Mount Dena, with 80 km (50 mi) length and 15 km (49,000 ft) average width, is situated on the boundary of the Isfahan, Kohgiluyeh and Boyer-Ahmad and Chaharmahal and Bakhtiari Provinces of Iran.[1]