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
Breifne Mountains The following table lists the 10 highest major mountain peaks of the Breifne Mountains, all with a topographic elevation of at least 411 metres (1,348 ft). Other hills include: Breifne Mountains The Breifne Mountains (), is a range of hills and mountains in counties Cavan, Fermanagh and Leitrim, Ireland. They are within a region historically known as Bréifne. The range has two sub-ranges: the southern Iron Mountains that span across Leitrim and Cavan, and the northern Cuilcagh Mountains that straddle Cavan and Fermanagh. The highest peak is Cuilcagh at , which is the highest peak in both Cavan and Fermanagh,