Discover the fauna and flora of the valley between the Pont du Cens and the municipal campsite, a real gem of biodiversity in the heart of the city. Le Cens is a small jewel of biodiversity that crosses the city... Protected species, common species but essential for the functioning of the river, plants that are consumed or that care, from the small aquatic insect to the otter of Europe through the webbed newt or other amphibians, there is something to be interested in! An ideal walk to take a new look at the nature that surrounds us... even in the city! This walk will pass through the "Côte d'Or", a secluded area between the racetrack, the Cens, farmland exploited until the 1970s. First occupied by quarries and then by traminots: presentation of the history of the district and the quarry fronts still visible by the Association de la Côte d'Or….