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Blisworth tunnel undergoes inspection

Blisworth tunnel on the Grand Union Canal undergoes five yearly inspection by the Canal and Rivers Trust.

Engineers will be checking the 200-year-old tunnel which is the third-longest in the country at one-and-three-quarter miles.

Tom Percival went along with Chris Reynard, one of the engineers.

56 seconds

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Annabel Amos10/05/2016

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