HS2 Long Itchington Wood Tunnel North Portal in December 2020
Image courtesy of HS2 Ltd.China Railway Tunnel Group TBM breakthrough at Georgia Gudauri Tunnel
China Railway Tunnel Group (CRTG) TBM breakthrough at Georgia Gudauri Tunnel photograph is press release of CRTG https://www.prnewswire.com/news-releases/successful-breakthrough-of-gudauri-tunnel-in-georgias-north-south-corridor-kk-highway-project-302124845.html
cover tunnel photo by: Matt Brown from London, England / CC BY
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