The eastern parts of Kohgiluyeh and Boyer-Ahmad Province are adjacent to the Dena Mountain Range, which is one of the highest elevations in Iran. Due to its high altitude, this mountain range is covered with snow most of the year, and for this reason, it is one of the most impassable mountainous places in Iran. This mountain range is the border between Kohgiluyeh and Boyer-Ahmad province and Isfahan province, and many efforts have been made to create a safe access route in this mountain range.
Currently, a mountainous and winding road has been built between the two provinces, which, of course, is often blocked during the winter and even into the spring due to heavy snowfall and its insecurity. This road starts from Sisakht and after a long journey through several villages, it finally leads to Semirom.
Along this route there is a winding pass known as Bijan Pass. According to local legends, Bijan is the name of a commander from ancient Iran who is said to have been caught in a blizzard with his troops in this area, which is why they chose the name Bijan for it.
The best time to visit this route and this pass is mid-spring. Earlier, the route was closed due to snowfall. During spring and summer, the beautiful scenery around this road is also one of the attractions of this area. Just before Bijan pass, you can visit Cheshmeh Mishi (Mishi Spring), which is one of the attractions of the region and is located next to this road.