Mont Mézenc

Mont Mézenc is a French mountain in the "Massif du Mézenc", part of the Massif Central in the Auvergne-Rhône-Alpes region. It is on the border of the Ardèche and Haute-Loire departments and is the highest mountain of both departments.
The mountain is in the "Natural regional park of the Mountains of Ardèche" ().
Geography.
Mont Mézenc is the highest mountain of the eastern border of the Massif Central. It is formed by two summits that are separated for a distance of about :
The Mont Mézenc has a volcanic origin; it is a dome of "phonolite", a kind volcanic rock. The mountain is covered by grasslands and heaths.