Standedge Tunnels
…the other is a canal tunnel. Before boundary changes in 1974, both ends of the tunnels were in the West Riding of Yorkshire. The canal tunnel on the Huddersfield Narrow Canal was authorised by the Huddersfield to Ashton-under-Lyne Canal Act 1794 (34 Geo. 3. c. 53) on 4 April 1794. Construction of a 5,451-yard (4,984 m) tunnel…