Harecastle Tunnel
…Despite the death of Brindley in 1772, the first tunnel – which measured 2,880 yd (2,630 m) long – was completed in 1777. On opening, it overtook Norwood Tunnel on the Chesterfield Canal (also bored by Brindley) as the longest tunnel on Britain's canal network. As the tunnel had no towpath, boatsmen had to leg…