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Iran's national railway has recently been registered as a historical and industrial work of Iran in the UNESCO World Heritage List. You will be my companion and we will pass through different climates such as desert, plain, mountain, summer and Hyrcanian forests with the North Tehran train. And we will visit railway engineering masterpieces such as Gadok tunnel, three golden lines and Versk Bridge --------------------------------- ----------------------------------------------------- Hello. I am Dr. Nazila Faraji and in this channel I post videos about veterinary medicine and proper maintenance of pets. If you are interested in this content, don't forget to subscribe, like and share! /c/Naazjinvet?... Instagram page: https://www.instagram.com/naazjin.vet...