Blisworth Tunnel has no tow path inside, but is wide enough for two narrowboats to pass in opposite directions. Work began in 1793, but errors by contractor left a wiggle in the tunnel, and after three years work it collapsed due to quicksand, claiming the lives of 14 men. It was then decided to begin again with a new tunnel. By the time the rest of the Grand Junction Canal had opened between London and Braunston, Northamptonshire in 1800, apart from the crossing of the River Great Ouse, the section of canal from Blisworth to the lower end of Stoke Bruerne locks
Bruce Tunnel stone, each with a decorative plaque of Pennant stone. Construction was begun in 1806 and finished in 1809. It is lined with English bond brickwork and has a wide bore to cope with the 'Newbury Barges' used on this canal. There is no towpath through the tunnel, so walkers and cyclists must walk across the top of the hill. When canal boats were still pulled by horses, the boatmen had to haul boats through the tunnel by hand, pulling on chains that ran along the inside walls. The tunnel is about northeast of Burbage village. To the north lies the