![](http://upload.wikimedia.org/wikipedia/commons/thumb/8/87/Coupe_transversale_des_Montagnes_Noires.jpg/220px-Coupe_transversale_des_Montagnes_Noires.jpg)
The Montagnes Noires (French, 'black mountains'), also known as the Montagne Noire (French, 'black mountain')[1] and in Breton as Menez Du[2] are an east–west oriented range of hills in Brittany centred on the town of Gourin. They culminate in the peak of Roc de Toullaeron (Breton: Roc'h Toull-al-Laeron) which attains a height of either 318m[3] or 326m.[4] Other significant peaks include Ar Menez (304m) and Montagne Noir (307m) (or, in Breton: Menez Du).[5] They are composed from a range of Precambrian, Ordovician, Silurian and Devonian rocks forming a part of the Variscan orogen and include sandstones, quartzites and slates.[6]
The hills form a part of the border between the départements of Finistère and Morbihan and just extend into Côtes-du-Nord.
References
- ^ Carte Geologique de la France, 1:1,000,000 scale, 5th edn, Bureau de Recherches Geologiques et Minieres
- ^ "Breizh :: Douaroniezh fizik". Archived from the original on 2010-03-03. Retrieved 2010-03-10.
- ^ "Montagnes, monts et points culminants bretons, hauteur des montagnes de Bretagne >> Geobreizh.com". Archived from the original on 2014-04-21. Retrieved 2014-04-20.
- ^ Collins Road Atlas France 1988, based on IGN mapping 1988
- ^ "Bretagne :: Géographie physique". Archived from the original on 2010-03-02. Retrieved 2010-03-10.
- ^ Carte Geologique de la France, 1:1,000,000 scale, 5th edn, Bureau de Recherches Geologiques et Minieres
48°09′N 3°40′W / 48.150°N 3.667°W