The nearby Blisworth Tunnel, part of the Grand Union Canal in Northamptonshire, is 3,076 yards long, making it the third-longest navigable canal tunnel in the UK. Built between 1793 and 1805, its construction was fraught with setbacks, including a deadly collapse due to quicksand. Before steam tugs arrived in 1871, boatmen propelled vessels by "legging"—pushing against the tunnel walls with their feet. A major restoration in the 1980s reinforced the structure, ensuring its place as a vital waterway and historical landmark.
This geocache is a small black container.