The largest regional nature park in mainland France is located in the heart of the Auvergne, covering almost 400 000ha around Riom-ès-Montagnes, and boasting five natural regions: four volcanic areas (Puys de Dôme, the Dore mountains, the Cantal mountains and the Plateau du Cézallier) and one granitic area (the Artense). An exceptional natural and human heritage to explore - and to safeguard.