HS2 Inside the Chiltern tunnel
HS2 Media release
source:
https://mediacentre.hs2.org.uk/news/hs2-chiltern-tunnel-florence-and-cecilia-reach-4-mile-point-at-chalfont-st-giles
Brennero Base Tunnel Tunnel Boring Machine Lilia side view
https://www.bbt-se.com/en/information/news/detail/news/tbm-lilia-starts-work-in-the-brenner-base-tunnel/
Centralny Port Komunikacyjny Łódź tunnel POLAND
Media information from CPK
https://www.cpk.pl/en/news/the-construction-of-the-cpk-long-distance-hsr-tunnel-in-lodz-has-begun-the-construction-contract-has-now-been-signed