![Benchmarks: February 12, 1986: France and the U.K. sign the Treaty of Canterbury, paving the way for the Chunnel Benchmarks: February 12, 1986: France and the U.K. sign the Treaty of Canterbury, paving the way for the Chunnel](https://www.americangeosciences.org/static/earth/benchmarks-february-12-1986-france-and-uk-sign-treaty-canterbury-paving-way-chunnel/Cantner_ChunnelCrossSection.jpg)
Benchmarks: February 12, 1986: France and the U.K. sign the Treaty of Canterbury, paving the way for the Chunnel
![Eurotunnel monitoring engineers examine completed section of Channel Tunnel rail tunnel with permanent tracks and walkways Stock Photo - Alamy Eurotunnel monitoring engineers examine completed section of Channel Tunnel rail tunnel with permanent tracks and walkways Stock Photo - Alamy](https://c8.alamy.com/comp/B8J47D/eurotunnel-monitoring-engineers-examine-completed-section-of-channel-B8J47D.jpg)
Eurotunnel monitoring engineers examine completed section of Channel Tunnel rail tunnel with permanent tracks and walkways Stock Photo - Alamy
![Completed Section of Channel Tunnel Rail Link in UK. Red lights give location of cross passages for emergency evacuation Stock Photo - Alamy Completed Section of Channel Tunnel Rail Link in UK. Red lights give location of cross passages for emergency evacuation Stock Photo - Alamy](https://c8.alamy.com/comp/B8J53T/completed-section-of-channel-tunnel-rail-link-in-uk-red-lights-give-B8J53T.jpg)
Completed Section of Channel Tunnel Rail Link in UK. Red lights give location of cross passages for emergency evacuation Stock Photo - Alamy
![Geological section of the English Channel at the crossing of the Channel Tunnel. [851x350] : r/MapPorn Geological section of the English Channel at the crossing of the Channel Tunnel. [851x350] : r/MapPorn](https://external-preview.redd.it/SZjAjlwT-xalmsdcPRLob0MVDOYArNzBplyXg1n5BUQ.jpg?width=640&crop=smart&auto=webp&s=c1a84950d3cadc9f81fb0812473a107312429aea)
Geological section of the English Channel at the crossing of the Channel Tunnel. [851x350] : r/MapPorn
![The location of the U.K. "cross-over" section of the Channel Tunnel... | Download Scientific Diagram The location of the U.K. "cross-over" section of the Channel Tunnel... | Download Scientific Diagram](https://www.researchgate.net/publication/284832712/figure/fig3/AS:667991234596866@1536272929444/The-location-of-the-UK-cross-over-section-of-the-Channel-Tunnel-and-the-additional.png)
The location of the U.K. "cross-over" section of the Channel Tunnel... | Download Scientific Diagram
![File:Channel Tunnel cross section National Railway Muswum York (27812217500).jpg - Wikimedia Commons File:Channel Tunnel cross section National Railway Muswum York (27812217500).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/e/ea/Channel_Tunnel_cross_section_National_Railway_Muswum_York_%2827812217500%29.jpg/2560px-Channel_Tunnel_cross_section_National_Railway_Muswum_York_%2827812217500%29.jpg)
File:Channel Tunnel cross section National Railway Muswum York (27812217500).jpg - Wikimedia Commons
![Irish Sea link | The bridge and tunnel options deemed technically feasible by ex-ICE presidents | New Civil Engineer Irish Sea link | The bridge and tunnel options deemed technically feasible by ex-ICE presidents | New Civil Engineer](https://cdn.ca.emap.com/wp-content/uploads/sites/9/2021/11/Indicative-tunnel-cross-section.jpg)
Irish Sea link | The bridge and tunnel options deemed technically feasible by ex-ICE presidents | New Civil Engineer
![System of the Channel Tunnel (France/UK) including a central service... | Download Scientific Diagram System of the Channel Tunnel (France/UK) including a central service... | Download Scientific Diagram](https://www.researchgate.net/profile/Heinz-Ehrbar-2/publication/312585059/figure/fig2/AS:452936229756929@1484999820322/System-of-the-Channel-Tunnel-France-UK-including-a-central-service-tunnel-cross_Q320.jpg)
System of the Channel Tunnel (France/UK) including a central service... | Download Scientific Diagram
![Infrastructure Past, Present, and Future Casebook/Channel Tunnel - Wikibooks, open books for an open world Infrastructure Past, Present, and Future Casebook/Channel Tunnel - Wikibooks, open books for an open world](https://upload.wikimedia.org/wikipedia/commons/thumb/7/74/Tunnel_typical_X_section_resize1_cropped.jpg/914px-Tunnel_typical_X_section_resize1_cropped.jpg)
Infrastructure Past, Present, and Future Casebook/Channel Tunnel - Wikibooks, open books for an open world
![a : Tender Designed Cross Section b : Typical As built Tunnel Cross Section | Download Scientific Diagram a : Tender Designed Cross Section b : Typical As built Tunnel Cross Section | Download Scientific Diagram](https://www.researchgate.net/publication/306200735/figure/fig2/AS:768915902828545@1560335245217/a-Tender-Designed-Cross-Section-b-Typical-As-built-Tunnel-Cross-Section.jpg)