In 1947, the Comité National des Sentiers de Grande Randonnée (CNSGR) was created by the Touring-Club de France, later to become, in 1978, la Fédération Française de Randonnée Pédestre

Originally set up by the Rois de Majorque as a defence system to protect the Roussillon from invaders, the tours de signaux (signal towers) allowed information to be passed quickly around the region, using fire and smoke signals.

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