Oxendon Tunnels
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The Oxendon Tunnels are disused railway tunnels in Northamptonshire, England. The Northampton to Market Harborough line opened in 1859 and had tunnels at Oxendon and nearby at Kelmarsh.<ref name="p333">Template:Cite book</ref> However, construction of the tunnels was a protracted process and they were not completed until February 1878.<ref name="o545">Template:Cite book</ref>
The original tunnel was single-track, and when the line was doubled a second single-track tunnel was built. The "up" line tunnel is Template:Convert long while the "down" line is Template:Convert. Due to the small bore, the tunnels were known as "the rat-holes" by train drivers.
The former "up" line tunnel at Oxendon is open as part of the Brampton Valley Way, a linear park which runs from Boughton level crossing on the outskirts of Northampton to Little Bowden near Market Harborough, on the former railway trackbed.