HS2 or their contractors made some photos available to the press. PR work.
https://www.mix96.co.uk/news/local/3121595/first-look-at-hs2-tunnel-through-the-chilterns/
Initial photos have been released of the building site where HS2 tunnels will dive under the M25 and tunnel their way beneath the Chilterns towards Birmingham.
cover tunnel photo by: Matt Brown from London, England / CC BY
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https://www.bucksherald.co.uk/news/people/these-are-2000-tonne-hs2-machines-will-drill-through-chilterns-2881688#gsc.tab=0
These are the 2,000 tonne HS2 machines that will drill through the Chilterns
www.bucksherald.co.ukThese are the giant HS2 tunnelling machines which will dig close to the M25 early next year.