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Rougé takes its name from the colour of the soil. Set off to explore the iron route, which partly follows the old railway line through the Brutz valley, crossing landscapes of moorland and hedgerows. You will see the site of the old iron mines, which were worked by the Celts and Gallo-Romans. You will notice the red colour of some of the paths, a sign of the presence of iron ore in the region. The same is true, in places, of the water in the streams.