Lancashire and Yorkshire led the world into the industrial revolution, yet were long cut off by the Pennine chain. The railway age finally brought the two counties together and ensured the continued growth of Manchester being linked to Leeds and Sheffield by a series of heroic railway tunnels, three of which were successively the longest in the world when completed in the 1840s. This book portrays them as extraordinary achievements against insuperable odds. This book fully captures their epic construction in the harshest of conditions with high loss of life.