[custom_adv]
The Trans-Iranian railway traverses many mountain ranges, and is full of spirals and 1 in 36 (2.78%) ruling grades. Much of the terrain was unmapped when construction took place, and its geology unknown.
Check Also
Unveiling ceremony of Mohammad Reza Shajarian’s unreleased album
Iran’s modern history in the twentieth century is a layered narrative of state-building, technological adoption, …