The World's Longest Tunnel — How Engineers Bored Through an Entire Mountain

Deep beneath the Swiss Alps, engineers spent 17 years boring through some of the hardest and most unpredictable rock on Earth — creating a tunnel so long that you cannot see the other end from the entrance.

The Gotthard Base Tunnel in Switzerland stretches 57 kilometres through the heart of the Alps, cost 12 billion Swiss francs, and required the labour of more than 2,600 workers from 16 nations. It is the longest tunnel ever built by human beings — and the engineering story behind it is extraordinary. 🏔️

In this video, we go deep inside the Gotthard Base Tunnel — exploring the geology that tried to stop it, the machines that bored through it, the workers who built it, and the moments of triumph that made history underground.
______________________________________________________________________________________________

🏔️ What you'll discover in this video:
✅ Why the Swiss Alps had been an impassable barrier at the heart of Europe for centuries
✅ The geological nightmare engineers faced — rock bursts, 45°C heat, and sudden water inflows
✅ The extraordinary Tunnel Boring Machines — 400 metres long, 3,000 tonnes, grinding through granite
✅ The human story of 2,600 workers from 16 nations who spent years deep underground
✅ The nine workers who lost their lives — and how they are remembered
✅ How engineers attacked the tunnel from five different points simultaneously
✅ The historic breakthrough moment — when two teams met underground with just 8cm of alignment error over 9km
✅ The opening ceremony on June 1st 2016 — attended by five European heads of state
✅ How the tunnel transformed the Zurich to Milan journey to under three hours
______________________________________________________________________________________________

CHAPTERS:
00:00 The World's Longest Tunnel — Introduction
01:29 Why Build It At All? The Alpine Problem
04:17 The Geology — The Enemy Underground
07:36 The Machines — Tunnel Boring Machines Explained
10:43 The Human Story — The Workers Underground
13:18 The Construction Process — How It All Came Together
16:14 The Breakthrough Moments
18:12 The Opening — A Continent Transformed
19:13 Closing — Through the Mountain
______________________________________________________________________________________________

🔔 If you find this kind of deep-dive fascinating, subscribe to Big Things Explained — we cover the massive systems, structures, and stories that shape the modern world but rarely make the headlines.
______________________________________________________________________________________________

📌 RELATED VIDEOS YOU MIGHT ENJOY:

▶ How Global Internet Works — The Undersea Cables Running the Digital World
▶ Dubai's Impossible Island — How Palm Jumeirah Was Built
▶ How Container Ports Move Thousands of Containers Every Day
▶ The World's Largest Airport — And the Story Behind Why It Exists
▶ The $500 Billion Mega-Project Changing the Middle East — NEOM Explained
______________________________________________________________________________________________

#GotthardTunnel #WorldsLongestTunnel #TunnelBoringMachine #SwissAlps #EngineeringMarvels #BigThingsExplained #MegaProjects #TunnelEngineering #GotthardBaseTunnel #HowItWorks #EngineeringExplained #SwissTunnel #AlpsTunnel #TBM #UndergroundEngineering #InfrastructureExplained #CivilEngineering #MegaEngineering #SwitzerlandEngineering #ConstructionEngineering

Видео The World's Longest Tunnel — How Engineers Bored Through an Entire Mountain канала Big Things Explained