In the vast, arid desert of southwest Algeria, between the towns of Colomb-Béchar and Abadla, the remnants of an abandoned railway line stretch across the sand. These rusted metal rails are all that remain of a massive construction project started during World War II. The railway was intended to be a 3,000 km trans-Saharan link connecting the Mediterranean coast to Niger, a project that reflected the ambitions of the French colonial powers of the time. The project was initiated in 1941 under the Vichy regime, a French government that collaborated with Nazi Germany during the war. It was authorized by Marshal Philippe Pétain, a key figure in the Vichy administration. The construction relied heavily on forced labor, including Spanish Republicans fleeing the Spanish Civil War, anti-fascist refugees, and Jewish workers. These laborers endured harsh desert conditions, with little in the way of resources or protection. The project was abruptly halted in late 1942 following the Allied landing in North Africa, known as Operation Torch. By that time, only 365 km of track had been built, with a portion of that—between 40 to 70 km—never actually used by a train. The railway was officially closed in 1963, and much of the track was later removed. Today, the remaining rails lie partially buried in the sand, serving as silent witnesses to a forgotten era. The southernmost point of the construction, Abadla, was later repurposed as a military testing ground for ballistic and space equipment, further erasing the railway’s presence from the landscape. These remnants offer a rare glimpse into a lesser-known chapter of French colonial history, one that intertwines industrial ambition, the realities of wartime constraints, and the exploitation of labor. The abandoned railway stands as a poignant reminder of the human cost behind colonial projects and the fleeting nature of grand ambitions in the face of historical change.