Yucamane
The Andes are the longest mountain range on Earth, extending from the Tierra del Fuego archipelago in southernmost South America to Venezuela in the north. In southern Peru, the Andes consist of several mountain chains including the Western Cordillera and the Eastern Cordillera, with elevations of up to , which are separated from each other by the Altiplano.
Argentine Monte
The Argentine Monte is in north-central Argentina, and has an area of .
It is to the east of the Andes and extends from Salta Province in the north to Chubut Province in the south.
It covers the eastern foothills of the Andes.
The ecoregion merges into the Patagonian steppe in the south, where it extends east to the Atlantic Ocean. 
In the north it lies between areas of Dry Chaco and Southern Andean Yungas to the east, and Central Andean puna and Southern Andean steppe to the west. 
In south it lies between Espinal to the east and Patagonian steppe to the west.