Lar National Park is one of the protected areas of Iran that has a high and mountainous and river ecosystem. Lar National Park is located in Central Alborz near the southwestern slope of Damavand mountain and on the border of Tehran and Mazandaran provinces. Lar National Park is between 6 and 7 km wide and 60 km long.
Lar plain, which is a major area of Lar National Park, is a very large plain of the Lar River bed. The Lar River originates from the heights of central Alborz and eventually flows into the lake of the Lar Dam. After Lar Dam, this river joins Haraz River to flow into the Caspian Sea.
Lar plain, which is located in a very wide, green and beautiful valley, is a piece of paradise that is fortunately pristine, due to this fact that it is a protected area and declared a national park, and also access to it is difficult, especially in the northern parts of Lar river.
The area of Lar National Park does not have permanent residential areas (city and village) and there are no urban and rural areas in its periphery, but it is one of the important nomadic habitats in which the nomads spend their summer period.
The entrance to Lar plain is from Polour town in the middle of Haraz road. Another route to enter Lar plain is from Garmabdar village in the north of Oshun Fasham region of Tehran, which can then be reached through the Khatun Bargah pass and Youneza pass to the northern areas of Lar plain.
Lar plain has an amazing beauty that you can enjoy especially in the spring, when It is realy a majestic flower plain.