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→History: 'Attock Tunnel Construction Tramway' info and link added
'''Tunnel Proposal 1859''' In 1859, Colonel Robertson proposed the idea of a tunnel and following is an extract from his report <ref name=mughal/>:
<blockquote>''The dimensions I propose for the tunnel inside are twenty-four feet wide by twenty feet in height, and a lining under the river of brick masonry two feet thick. This places foundation level of the roadway 82 feet under the low water level, and placing the entrances one hundred feet above this level for safety, we have 182 feet to descend and ascend. The grade I propose is 1 in 20; this is rather steep for railway traffic but offers no difficulties for normal road traffic. The width of the river bed at the point I have selected for the tunnel is 1215 feet.''</blockquote>
Work started in 1860 but due to water leakage, machinery breakdowns and over expenditure the construction was stopped and project abandoned in 1862 <ref name=mughal/> when the two tunnels were only 258 feet(79 metres) apart <ref name =IA21>“Industrial Railways and Locomotives of India and South Asia” compiled by Simon Darvill. Published by ‘The Industrial Railway Society’ 2013. ISBN 978 1 901556 82-7. Available at http://irsshop.co.uk/India. Reference: Entry IA21 page ....</ref>. During the construction a tramway of unknown gauge was used on the west side for the removal of the excavated material <ref name =IA21/>
