Ojos del Salado Spanish, comes from the enormous deposits of salt that, in the form of lagoons or “eyes”, appear in its glaciers. An international highway between Chile and Argentina runs north of the mountain. Ojos del Salado along with several other high volcanoes such as El Muerto, El Solo, Nevado Incahuasi and Nevado Tres Cruces lies at the southern end of the Central Volcanic Zone of the Andes. Volcanic activity in the region commenced 26 million years ago in the Cordillera Claudio Gay, at the same time as the neighbouring Maricunga Belt volcanoes were active. Starting 18 million years ago, local subduction
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,