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.
Tupungato
Tupungato, one of the highest mountains in the Americas, is a massive Andean stratovolcano dating to Pleistocene times. It lies on the border between the Chilean Metropolitan Region (near a major international highway about east of Santiago) and the Argentine province of Mendoza, about south of Aconcagua, the highest peak of both the Southern and Western Hemispheres. Immediately to its southwest is the active Tupungatito volcano (literally, "little Tupungato"), which last erupted in 1987.