Three Golden Lines

From Wikipedia, the free encyclopedia

Three Golden Lines is one of sections of Mazandaran branch of Trans-Iranian rail roads, it is located in the Sewatcow county of Mazanderan. Is one of symbols of Iran's rail roads corporation, As well as being the back ground of monies during Pahlevi era. Trains most pass three times from the same area, but in different heights and points, to reducing their height if they are going to Sari or raising it while getting back. Trains don't turn around the mountain, but Dowgal twin tunnels served to changing the point of them.