it is one of the best places for ski in Tehran. If you like ski you must go there and enjoy your time, the rout is not that far from Tehran and it is also amazing. It has good quality equipment and you can also rent what you need. There also lots of hotels and apartments for rent around it if you decide to stay more days.
It was built in the 1960s before the revolution, many Iranian skiers go to Dizin because it still offers the best overall skiing in the country with plenty of trails for all types of skiers, excellent snow conditions for much of the year, and plenty of ski shops.