My highway! The canals of the United Kingdom are a major part of the network of inland waterways in the United Kingdom. They have a colourful history, from use for irrigation and transport, through becoming the focus of the Industrial Revolution, to today's role for recreational boating.
Expert leggers Daniel Jinks and Ernest Wood. The two men demonstrate the process of 'legging' through Barnton Tunnel on the Trent and Mersey Canal. Early canal tunnels had no tow-paths, so to propel the boat through the tunnel two people had to lay on their backs on the boat, and push the boat along using their feet on wall of the tunnel. The Barnton Tunnel was over 500 yards long.
Caen Hill Locks, Devizes by Devizes Lion, via Flickr. From Wikipedia: "Caen Hill Locks are a flight of  locks on the Kennet and Avon Canal, between Rowde and Devizes in Wiltshire England." More: http://en.wikipedia.org/wiki/Caen_Hill_Locks