An intrepid team member visited the HS2 event on September 22. Its pre-event billing promised this: See visualisations of the portal structure.
Somewhat underwhelmed, our colleague got a copy of the display boards (download the pdf – 1MB)
Anyone who was expecting to learn details, among other things, of construction noise, operational noise, how the two tunnels will be bored, how construction segments will be brought to site and where they will be stored, how the spoil will be removed, the conveyor belts, the design and visual impact of the entrance, would have been disappointed.
Furthermore, most people’s idea of a visualisation of a tunnel portal would be similar to these….
…. which came as a surprise to HS2 staff.
A footnote from me:
Looking at the main document, I was surprised to see trees in bloom in January:
Even if you use the American date format (why would you?) the picture is still misleading.