Iran Press/ Iran news: The Hyrcanian forests have been extended in some parts of five provinces, including Semnan, Golestan, Gilan, Mazandaran, and North Khorasan, with 1.9 million HA area, approximate length of 800 kilometers, and a width of 20-70 kilometers, from Astara in the north of Gilan province to Golidagh in the east of Golestan province.
According to UNESCO, these forests are between 25 and 50 million years old. Their surface area was reduced during the Quaternary Period's dramatic climate changes and glaciations and expanded again when the temperatures stabilized.
UNESCO has documented the existence of over 3,200 vascular plants and 58 species of mammals, including the iconic Persian panther and endangered wild goat.
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