Geoheritage in Ardennes (France and Belgium): geology, cultural heritage and landscapes

The geology of the Western part of the Ardenne Massif is renowned by various stratotypical outcrops. But the Ardennes, highlighted with the geoheritage point of view, can show other specific topics. Some of these topics are based on geomaterials: the slates from the Cambrian formations, the ancient millstones quarries in lower Devonian sandstones, the red "marbles" and blue or black ornamental limestones from middle and upper Devonian, the fluorine deposits... Others are focused on geomorphological specific sites, linked to local legends. These sites, sometimes already included in the touristic promotion of the Ardennes, can be an excellent entry point to encourage the emergence of a transnational Geopark project in this area.