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
Seven Second Summits Seven Second Summits The Seven Second Summits are the second-highest mountains of each of the seven continents. All of these mountain peaks are separate peaks rather than a sub-peak of the continents' high point. The Seven Second Summits are considered by many mountaineers and geographers as a much harder challenge than the traditional Seven Summits. Austrian mountaineer Christian Stangl became the first person to successfully climb the Second Seven Summits. Stangl climbed all possible candidates for the Second Seven Summits quest (K2, Mt. Logan, Ojos del Salado, Batian, Mt. Tyree, Dych Tau, Dufourspitze, Sumantri, Ngga Pulu, Puncak Trikora, Puncak Mandala