However, the major disadvantage of this route is the passage through the chains of Zagros, the Central Hungarian massif and Alborz, especially in the Kurdistan and Hamadan provinces where inevitably climbing above 1800 m.
Međutim, veliki nedostatak ove trase je prolaz preko lanaca Zagrosa, Centralnoiranskog masiva i Alborza, osobito u Kurdistanskoj i Hamadanskoj pokrajini gdje je neizbježno penjanje na visine iznad 1800 m.