A train disappears beneath the Swiss Alps, and millions of passengers barely notice the hidden world around them. Switzerland’s underground country is a massive engineering network built beneath mountains, with more than 1,400 tunnels stretching across the nation. This hidden infrastructure is changing how Europe moves while reducing pressure on fragile Alpine landscapes.
The Switzerland underground tunnels project is not just about faster travel. It represents a long-term climate strategy created through engineering, policy, and environmental planning. Beneath the Alps, more than 2,000 kilometers of tunnels and galleries connect railways, roads, water systems, and energy routes.
