Americas
The largest mountain ranges are the Andes and Rocky Mountains. The Sierra Nevada and the Cascade Range reach similar altitudes as the Rocky Mountains, but are significantly smaller. In North America, the greatest number of fourteeners are in the United States, and more specifically in the U.S. state of Colorado. The highest peaks of the Americas are located in the Andes, with Aconcagua of Argentina being the highest; in North America Denali (Mount McKinley) in the U.S. state of Alaska is the tallest.
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.