EPISODE · Sep 7, 2026 · 21 MIN
Inside HS2’s Only Double-Track Tunnel - The Giant Copthall Tunnel!
from Green Signals · host Green Signals Productions
Away from the politics and the noise, from the debates about costs and benefits, the various teams at HS2 are quietly and diligently getting on with delivering some of the most remarkable engineering achievements this country has ever seen. Today, we have come to visit a section of railway that has more than its fair share of amazing engineering – from the West Ruislip portal of the western section of Northolt Tunnel to Copthall Tunnel and the Colne Valley viaduct.Membership: If you want to see even more from Green Signals, including exclusive content, become a member and support the channel further too.YouTube -https://www.youtube.com/@GreenSignals/joinPatreon -https://www.patreon.com/GreenSignalsGreen Signals: Website -http://www.greensignals.orgMerchandise - http://greensignals.etsy.comNewsletter -http://www.greensignals.org/#mailing-listFollow: X (Twitter) -https://twitter.com/greensignallersLinkedIn -https://www.linkedin.com/company/green-signals-productions-ltdImportant notes:You can view our legal disclaimer, copyright information and privacy policy here - https://www.greensignals.org/legal/
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Inside HS2’s Only Double-Track Tunnel - The Giant Copthall Tunnel!
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