Harecastle Tunnel
Best. Tunnel. Yet. At the top of Heartbreak Hill is the Harecastle Tunnel. The first tunnel was constructed by Brindley (actually, I think he had some navvies helping) and was built between 1766 and 1777. It was a mile and three quarters long, and only had room for boats going in one direction at a time. There was no tow path, so boats had to be ‘legged’ through – that is, a team of men lay on their back on…