Employees work at the excavation o the tunnel for Lyon-Turin high-speed train line, in Saint-Julien Mont Denis on February 6, 2025. The Franco-Italian state-owned company TELT, which is overseeing the construction of the Lyon-Turin base tunnel project, presented the first of seven tunnel boring machines to journalists on February 6, 2025, said to mark the acceleration of the project. (Photo by JEFF PACHOUD / AFP) (Photo by JEFF PACHOUD/AFP via Getty Images)