[1] Their name is given based on their geographical position, west, to the Transylvanian Plateau, which is simultaneously their eastern limits, respectively to the Timiș-Cerna Gap of the Banat Mountains, the southern group of the Western Carpathians.

The Western Carpathians are positioned between the rivers Danube, Barcău and Someș.

Geographical composition is varied, with a real "petrographic mosaic".

(flysch, crystalline schists, limestones, igneous rocks, metamorphic rocks) From north to south, three major mountain groups can be identified, separated by different river valleys.

Media related to Romanian Western Carpathians at Wikimedia Commons