24/05/2025
10 “Bore-ing” Facts!
1. Built on Chalk
The Channel Tunnel isn't just under the sea; it's through it! Engineers burrowed through a stable layer of chalk marl. Millions of cubic meters of excavated chalk from the British side helped create Samphire Hoe Country Park in Kent, literally extending the coastline!
2. Moles at Work
Massive Tunnel Boring Machines (TBMs), nicknamed "moles," dug the tunnels from both sides. These massive machines featured hardened steel teeth and cutting discs to grind through the chalk, systems for removing spoil and installing concrete tunnel linings. It took ELEVEN colossal TBMs to dig the Channel Tunnel – six from the French side and five from the British side.
3. Ladies First!
The French TBMs were affectionately named Brigitte, Europa, Catherine, Virginia, Pascaline, and Severine – a tradition for good luck and safety underground. (the British TBMs had names too, "Doris" was one. The others we aren’t sure of!).
4. Heavier Than the Eiffel Tower
These boring machines were behemoths, with a combined weight of a staggering 12,000 tonnes – heavier than the Eiffel Tower itself!
5. Record Breakers
The TBMs were incredibly efficient, setting world records for daily (75.5 meters), weekly (428 meters), and monthly (1,719 meters) excavation rates – records that still stand today!
6. The Pilot Tunnel
The central service tunnel was built first. This "pilot" allowed engineers to assess the seabed's geology, ensuring the main train tunnels had a clear and safe path.
7. Paddington's Pioneer Journey
After the breakthrough, British engineers passed a cuddly Paddington Bear toy through to the French side as a symbolic first "passenger." The French reciprocated with a celebratory bottle of Champagne!
8. Not One, But Three
Though we call it "the Channel Tunnel," it's actually three parallel tunnels: two main rail tunnels (one southbound, one northbound) and a smaller central tunnel for service, ventilation, and emergencies. There are also undersea crossovers allowing trains to switch tracks.
9. A Modern Wonder
The tunnel is 31 miles long. 23.5 miles of which are beneath the sea, making it the longest undersea tunnel in the world. It is recognized globally as one of the Seven Wonders of the Modern World, a testament to its incredible engineering and scale.
10. “Le Shuttle”
transport carrying trains carry cars, motorcycles, coaches and trucks between terminals in Folkestone and Coquelles, and Freight trains transport goods between the UK and Europe. Le Shuttle trains are about 775 metres long and are made from stainless steel. By 2024, over 100 million vehicles and nearly 500 million people had used the Le Shuttle service alone!
LeShuttle