Aconcagua 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. Aconcagua is bounded by the "Valle de las Vacas" to the north
Spanish Peaks (Montana) Spanish Peaks (Montana) The Spanish Peaks, avg el. , is a mountain range between Bozeman, Montana and Ennis, Montana in Gallatin and Madison County, Montana. It is a sub-range of the much larger Madison Range, itself a sub-range of the Rocky Mountains. The hydrological divide of the range serves as the border between Gallatin and Madison County, Montana. The Spanish Peaks are made up of 1.6 billion year-old gneiss, making them the oldest peaks in the Madison Range, predating the rest of the range by 50-60 million years. Gallatin Peak, el. 11,015 ft., is the highest peak in the group.