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
Rove Tunnel Rove Tunnel The Rove Tunnel is a canal tunnel in France that connected Marseille to the Rhône river. It was opened in 1927 and closed in 1963. With a length of it was a major work of civil engineering and one of the longest such tunnels. The tunnel was the most challenging section of the Canal de Marseille au Rhône, which connected Marseille to the Rhône river. The canal has a total length of . The tunnel starts near the village of Le Rove, and runs through the Chaîne de l'Estaque at sea level. The tunnel is long, wide and