The rural road leading from Veulla to Pont de Leser, far from light pollution, can be followed after the sunset with the help of a portable torch and an audio guide. Fifteen stops can be found thanks to refractive signs. The itinerary will lead visitors into a new dimension of the protected area, stimulating their curiosity and their desire to discover the "dark side" of the surrounding environment. The main feature of the whole route is water, which offers different voices according to the season.