Aconcagua
Aconcagua (), with a summit elevation of , is the highest mountain in both the Southern and Western Hemispheres. It is located in the Andes mountain range, in the Mendoza Province, Argentina, and lies northwest of its capital, the city of Mendoza, about from San Juan Province and from the international border with Chile. The mountain itself lies entirely within Argentina, immediately east of Argentina's border with Chile. Its nearest higher neighbor is Tirich Mir in the Hindu Kush, away. It is one of the Seven Summits.
Mount Darwin (Andes)
Mount Darwin () is a peak in Isla Grande de Tierra del Fuego forming part of the Cordillera Darwin, the southernmost range of the Andes, just to the north of the Beagle Channel. It is formed of crystalline schists and has massive glaciers down its steep southern slopes. Monte Darwin was for a long time considered as the highest peak in Tierra del Fuego, but that distinction corresponds to a mountain unofficially named Monte Shipton, which is about high and is located at . Both peaks are best climbed in late December, January, February and March. Monte Shipton was first climbed in 1962 by Eric Shipton, E. Garcia, F. Vivanco and C. Marangunic.