Faroe islands Suðuroy tunnel proposal Map: my own drawings on Apple Maps.

California HSR Palmdale - Burbank Alternatives - source: California HSR Environmental documents: https://hsr.ca.gov/wp-content/uploads/2022/08/PB_0_Summary_Rev11_Clean_A11Y.pdf

Adur-Worthing Council press release on tunnel proposal 6 Sept 2022

Inside the Silvertown Tunnel TBM (by TfL press release https://www.riverlinx.co.uk/news/tunnelling-underway)

Silvertown Tunnel TBM Shaft (cropped TfL press release) https://www.riverlinx.co.uk/news/tunnelling-underway

SCG Terratec S48C Samui Island breakthrough Owner of photo Terratec media information

Nordhavn tunnel map. from Vejdirektoratet (Danmark) report

source of this graphics: https://kommunikasjon.ntb.no/pressemelding/tilbydergruppen-nordland-forbinde-trekker-seg-fra-ops-prosjektet-e10-halogalandsvegen?publisherId=17847490&releaseId=17940014&lang=no

Mitma Granada Tunnel Renovations (graphics from Mitma release)

Implenia Brenner Northernmost tunnel from Implenia media release.