An employee installs a sign next to the railway line to allow the little train, a historic tourist railway, to pass in Artouste near Laruns, south-western France, on May 7, 2026. The Artouste little train is located in the Ossau Valley, in the Pyrenees-Atlantiques department of France. This historic tourist railway offers a mountain excursion at an altitude of over 2,000 meters. It travels 10 kilometers on its narrow-gauge track. It is the highest narrow-gauge railway in Europe. (Photo by Gaizka IROZ / AFP via Getty Images)