Blisworth Tunnel Blisworth Tunnel Blisworth Tunnel is a canal tunnel on the Grand Union Canal in Northamptonshire, England, between the villages of Stoke Bruerne at the southern end and Blisworth at the northern end. The northern end is about from the northern end of the Grand Junction Canal at Braunston, Northamptonshire and the southern end about . At 3,076 yards (2,813m) long it is the third-longest navigable canal tunnel on the UK canal network after Standedge Tunnel and Dudley Tunnel (and the ninth-longest canal tunnel in the world). At its deepest point it is "ca."143 feet ("ca."43m) below ground level. The tunnel
Sapperton Canal Tunnel Sapperton Canal Tunnel The Sapperton Canal Tunnel is a tunnel on the Thames and Severn Canal near Cirencester in Gloucestershire, England. With a length of 3,817 yards it was the longest canal tunnel, and the longest tunnel of any kind, in England from 1789 to 1811. Although the Thames and Severn Canal was authorised by an Act of Parliament on 17 April 1783, the details of the tunnel had not been worked out, and arguments about its size continued for two or three months. Boats on the Severn were trows and were wide, while those on the Thames were Thames