Mont Cenis Base Tunnel
57.5-km rail base tunnel under construction between Saint-Jean-de-Maurienne, France, and Susa, Italy, for the Lyon–Turin line.
At a glance
| Source | Author | Role | In one line |
|---|---|---|---|
| Inside Europe’s New Mega-Tunnel Under The Alps | The B1M | subject | A tour inside Europe’s new mega-tunnel under the Alps. |
Sub-places
Inside Europe’s New Mega-Tunnel Under The Alps — The B1M (2025)
Source: Original · Readwise highlight
Stretching for 57.5km, it’ll become
- Role: subject
- In the video: The presenter tours the works: drill-and-blast sections, a lining gantry, the TBM Viviana, a huge cavern nicknamed the cathedral, and ventilation shafts. The tunnel runs from Saint-Jean-de-Maurienne, whose station will be replaced by a bigger international one, to Susa, where over 3,000 demonstrators protested in 2023. It should cut Lyon–Turin from 3h47 to 1h47 for about 25 billion euros.
- Why it matters: The tunnel is the subject; the valley protests are the political cost.