Montagne Noire

The Montagne Noire (, known as the Black Mountains in English) is a mountain range in central southern France. It is located at the southwestern end of the Massif Central in the border area of the Tarn, Hérault and Aude departments. Its highest point is the Pic de Nore at .
The mountain is within the Haut-Languedoc Regional Nature Park.
The GSSP for the Tournaisian is near the summit of La Serre hill, in the commune of Cabrières, in the Montagne Noire . The GSSP is in a section on the southern side of the hill, in an 80 cm deep trench, about 125 m south of the summit, 2.5 km southwest of the village of Cabrières and 2.5 km north of the hamlet of Fontès.