The GR 70, also known as the Chemin de Stevenson or the Robert Louis Stevenson Trail, is a Grande Randonnée that runs for approximately 225 kilometres (140 mi) through the French departments of Haute-Loire, Lozère and Gard in a generally north–south direction from Le Monastier-sur-Gazeille to Saint-Jean-du-Gard. It follows approximately the route taken by Robert Louis Stevenson in 1878, a journey described in his book Travels with a Donkey in the Cévennes.