Passengers are silhouetted as they stand with their belongings aboard the Iron Ore train, a kilometre long freight transporting iron from the mines in Zouerat to the port city of Nouadhibou, as it stops at the station in Choum, on March 19, 2023. - Tourists, occasional passengers and traders, travel on the open carriages carrying iron dust for the overnight ride. (Photo by MARCO LONGARI / AFP)