Incahuasi Central Volcanic Zone of the Andes together with about 110 other Quaternary volcanoes, and lies in the southern sector of the volcanic zone; other volcanic zones in the Andes are the Northern Volcanic Zone, the Southern Volcanic Zone and the Austral Volcanic Zone. The history of volcanic activity is poorly known for most of these volcanoes owing to the lack of dating; only a few historical eruptions have been recorded, such as an eruption at Ojos del Salado in 1993. Incahuasi is located northeast of Ojos del Salado, the highest volcano in the world. Both volcanoes are found at the
Volcanic Seven Summits Although Aconcagua, the highest peak in South America and the highest peak in the western hemisphere, does have a volcanic origin, its current high point is due to geological processes rather than being strictly volcanic. Due to this, Aconcagua is not considered to be a volcano on its own, at least not as a member of Volcanic Seven Summits. Topographic maps of the Argentina and Chile border region which contains the highest peaks suffer from poor accuracy, with elevation errors exceeding in many cases. However, the current consensus based on the most recent measurements places Ojos del Salado as the