The unfinished Colne Valley Viaduct traces a gentle curve over several lakes northwest of London, a picturesque symbol that belies the ugly debate over the ambitious but expensive HS2 train line.
The unfinished Colne Valley Viaduct traces a gentle curve over several lakes northwest of London, a picturesque symbol that belies the ugly debate over the ambitious but expensive HS2 train line. Completion of the Colne Valley Viaduct and Chiltern Tunnel section is scheduled for November 2025.