1238 GMT February 23, 2020
The other mountain range is the Zagros, which separates the central plateau from Mesopotamia in the west. The two ranges connect somewhere west of modern Tehran.
Several river valleys lead from the Alborz to the Caspian Sea. They have eroded large areas of the mountain and have created impressive deep gorges, Livius reported
One of these connects modern Damghan to Sari (the road once taken by Alexander the Great), another connects Tehran with Amol. In the far west, the Alborz touches the Zagros; in the east, it reaches the holy city of Mashhad.
Beyond the Afghan border, it continues as the Hindu-Kush, from which it is separated by the river Arius (modern Hari Rudi).
The average height of the Alborz is about 2,750 meters, but many peaks exceed 4,000 meters and are permanently covered with snow.
A magnificent place, namely Dizin Ski Resort, is located in the Alborz Mountain Range, near Tehran and also the city of Karaj. It was established in 1969.
Many domestic and foreign tourists travel to the resort from December to May annually, because of the resort's high altitude.
The highest ski lift reaches 3,600 meters, making it one of the 40 highest ski resorts in the world.
Skiing amenities include two hotels, 19 cottages and five restaurants, villas and private apartments around the Dizin Ski Resort, which accommodate thousands of people every year.
Dizin is the first ski and winter sport resort in Iran, which has been officially recognized and granted the title by the International Ski Federation for its capability in administrating official and international competitions.
It gained its official title for its physical and technical features such as the course slope, length of the course and the place where the competitions and races are to be held, as well as amenities and other recreational facilities.
The installation of ski-lifts at Dizin dates back to 1348 (Iran calendar which equates to 1969) which include three telecabins, two ski-lifts, seven dish tele-skis and one Hammer tele-ski, the lowest point of the region is 2,650 meter, while its highest point is 3,600 meters.
There are tennis courts and other facilities for mountain climbing and mountain biking. Ski instruction courses are offered.
At present, the Dizin ski region is administered by Iran Ski Federation.
The snow quality at Dizin is excellent and rivals that of many European and rocky mountain snow areas.
Alborz is an important climate barrier between the arid central plateau and the moist north.