Called the Mastrou, or Ardèche Train, the Vivarais railway line is a metre gauge railway line for tourists, 33 kilometres long, connecting Lamastre and Saint-Jean-de-Muzols, near Tournon-sur-Rhône. The steam train and engine, both listed Historic Monuments, offer young and old the chance to explore the verdant Doux Valley, a conservation area with panoramic views which are inaccessible from the road.
A section of the Mastrou line can also be travelled by bicycle-rail (Vélorail), leaving from Boucieu-le-Roi. The line descends the Doux gorges for twelve kilometres, and the return journey is made by historic autorail. An excursion to be enjoyed as a couple, as a family or with friends!