Hunsbury Hill Tunnel is a railway tunnel on the Northampton Loop Line of the West Coast Main Line. The tunnel runs in a straight line from the Briar Hill district of Northampton (north portal: ), England about north by east to the East Hunsbury district south of the town (south portal: ). The tunnel has a single bore with twin tracks and is long.Phil Deaves web site It is about 1 mile south of Northampton railway station and the next station south is Wolverton in Milton Keynes. The tunnel opened together with the rest of the loop line in 1881.History of the Railways of Northamptonshire, P. Butler, 2006
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