56 kilometer from the Peshawar lies 44 km long Khyber pass which winding through the safed koh mountain bordering with Afghanistan Due to his geographical and historical importance elevates him from other passes of Pakistan Starting at an elevation of 491 at Jamrud and and end at an elevation of 1070 at Torkham. For Centuries the trade route and invasion route Khayber passes witness the Armies of Alexander the Great, Timur, Babur, Mahmud of Ghazna, and Nadir Shah in their invasions of India. In 1920 in the Birtish regime a rail road was constructed passing 34 tunnels and 92 bridges and culverts.