Andes
The Andes or Andean Mountains () are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. This range is about long, about wide (widest between 18° south and 20° south latitude), and of an average height of about . The Andes extend from north to south through seven South American countries: Venezuela, Colombia, Ecuador, Peru, Bolivia, Chile and Argentina.
Frontal Cordillera
Frontal Cordillera () is a mountain range in western Argentina that forms part of the Andes. It extends in a north-south direction in the provinces of La Rioja, San Juan and Mendoza. To the west of the Frontal Cordillera lies the Principal Cordillera that makes up the Argentina–Chile border and the continental divide.