Get an in-depth update on the progress at HS2's Copthall Green Tunnel and the network of embankments and bridges in the London Borough of Hillingdon, that connect HS2's London tunnels to the Colne Valley Viaduct.

This 880m long tunnel, one of five green tunnels on the HS2 route, is designed to blend seamlessly into the landscape with a layer of trees, plants, and shrubs on top.

In this video, we cover key developments inside the tunnel, including progress on the tunnel derailment walls, walkways and the construction of the five ventilation shafts.

We also explore progress in the area surrounding the tunnel, where 500,000m³ of excavated material is being reused on site to create embankments and mounds, and key bridges have been completed.

Over the coming years, 70,000 trees and shrubs will be planted on this section of the route, transforming the area into a biodiversity hotspot.

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0:00 Introduction
0:18 Tunnel Progress Update
1:03 Work near the Colne Valley Viaduct
1:15 Vent shafts explained
1:52 Inside the tunnel works
2:03 Other ongoing works
2:19 The West Ruislip Embankment
2:57 Transition zones explained
3:24 The Gatemead Embankment
3:36 Upcoming embankment works
4:07 Final thoughts
4:21 Outro

#HS2 #Construction

If you have a question about HS2 or our works, please contact our HS2 Helpdesk team on 08081 434 434 or email hs2enquiries@hs2.org.uk.

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