In 1903, the Mirepoix-Chalabre-Lavelnet line made it possible to link the industrial valley of the Hers to the national railway network via Bram or Pamiers. Up to seven trains run every day.
The Compagnie des Chemins de Fer du Midi is responsible for the operation of the passenger, mail and goods transport line: raw materials (fir wood), manufactured products (textile and horn comb). More than two hundred factories and thousands of workers thus make the local economy of draperies, headgear, combs and shoes work. From 1945, the development of road transport and deindustrialization gradually reduce the use of the track.
A diesel lessor then replaces the steam train. In 1973, the train whistled one last time on the line. History of a railroad become a hiking trail ...