Khojak Tunnel
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The Khojak Tunnel is a 5.1km (3.2 mi.) long railway tunnel located in the Balochistan province of Pakistan.
The tunnel was constructed in 1891 and remains one of the longest tunnels in South Asia, and the longest in Pakistan. It is expected to be surpassed by the 8.6km Lowari Tunnel, currently under construction, in 2009.