Aconcagua with a summit elevation of 6,960.8 metres (22,837 ft), 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 112 km (70 mi) northwest of its capital, the city of Mendoza, about five km (3.1 mi) from San Juan Province and 15 km (9.3 mi) 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, 16,520 kilometres (10,270 mi) away. It is one of the Seven Summits.
Aconcagua is bounded by the Valle de las Vacas to the north and east and the Valle de los Horcones Inferior to the west and south. The mountain and its surroundings are part of the Aconcagua Provincial Park. The mountain has a number of glaciers. The largest glacier is the Ventisquero Horcones Inferior at about 10 km (6.2 mi) long, which descends from the south face to about 3,600 m (11,800 ft) in altitude near the Confluencia camp. Two other large glacier systems are the Ventisquero de las Vacas Sur and Glaciar Este/Ventisquero Relinchos system at about five kilometres (3.1 mi) long. The most well-known is the north-eastern or Polish Glacier, as it is a common route of ascent.