HS2 tunnel segments - in daylight

[@ScottishNSRailFan]

Enjoyed your video. Not been watching them for some time.

[@JT-nr2ss]

Awesome!!

[@robtyman4281]

Wow, those 66's really are tough workhorses if one loco can haul all this weight. Phenomenal!

[@johnbell3621]

Are those blocks solid concrete or are they hollow? I find it hard to believe that a single engine could pull that without the wheels slipping.

[@paulsheward3325]

The one's cast at Avonmouth are going north by road, seen them on the M5!!!

[@Jamie92208]

161 segments, 23 complete rings, enough to make 36 metres of tunnel. With 2 machines doi g about 12 metres per day each, that's enough for just a day and a half.

[@CambriaJunction]

Then I guess it adds up that this train runs approximately 5 days a week!

[@ben437]

60,000 being cast down at Aggregate Industries Avonmouth plant

[@CambriaJunction]

These ones are cast at Grain, on the Thames estuary in North Kent.