Keeping the world's longest railroad tunnel safe

The Gotthard Base Tunnel in Switzerland is 57km long: and I think its greatest piece of safety equipment is nowhere near the tunnel itself. ■ Thanks to Swiss Federal Railways https://www.sbb.ch/ - drone filming near the tracks was specially approved with railway staff. ■ For tours into the Gotthard Tunnel and to the visitors' window, see Uri Tourism: https://www.uri.swiss/de/erleben/seil... Camera: Alicja Pahl Producer: Sebastian Capeda at Viven https://viven.ch Editor: Michelle Martin    / @onthecrux   🟥 MORE FROM TOM: https://www.tomscott.com/ (you can find contact details and social links there too) ❓ LATERAL, free weekly podcast: https://lateralcast.com/    / lateralcast   👥 THE TECHNICAL DIFFICULTIES:    / techdif