HS2 tunnel segments speed their way through South London

[@HSTHoward]

That’s on full tilt! Nicely captured

[@MattTheUPRailfan2006]

Concrete beams?

[@CambriaJunction]

They are concrete segments that form the tunnel lining...hence the curved shape.

[@MattTheUPRailfan2006]

@@CambriaJunction Oh, so their building a tunnel somewhere nearby your area?

[@CambriaJunction]

@@MattTheUPRailfan2006 yes, HS2 is the new high speed line that's being built in the UK, from London to Birmingham. There are a number of tunnels along the route, including some as it passes through north london. These concrete segments are made in a factory out in Kent, then they are brought through London by train and delivered to the work site in Ruislip.