The longest railway tunnel in Pakistan was built in 1891
The engineering task involved hundreds of laborers and heavy machinery. Miners from Britain joined thousands of local and immigrant laborers. Located on the Quetta-Chaman railway line, the 3.9 km tunnel runs through the historic Kojak Pass at an altitude of over 4000 ft.The engineering task involved hundreds of laborers and heavy machinery. Miners from Britain joined thousands of local and immigrant laborers. Located on the Quetta-Chaman railway line, the 3.9 km tunnel runs through the historic Kojak Pass at an altitude of over 4000 ft.