Media gallery

TBM Caroline completes 5 mile journey - final tunnel ring segments being fixed into place

TBM Caroline completes 5 mile journey - Final tunnel ring segments being installed

TBM Caroline completes 5 mile journey - final ring segments being installed

TBM Caroline completes 5 mile journey - TBM operative checks one of the final tunnel ring segments

TBM pilot working to complete the mile journey for TBM Caroline

TBM Caroline completes 5 mile journey - Tunnelling team celebrate completion of 5mile tunnel drive

TBM Caroline completes 5 mile journey - Tunnelling team stood in Northolt Tunnel West

Mining team mark the completion of the tunnel drive from TBM Caroline