Cerro del Bolsón the main chain by a relatively low saddle. Cerro del Bolsón Cerro del Bolsón is a mountain in the Aconquija Range of Argentina, in Tucumán province. It is the highest point of a significant eastern spur of the main range of the Andes, east of the Puna de Atacama region. It lies about 200 kilometres east of Ojos del Salado, the highest point in the Puna de Atacama. While not of great height compared to the 6000 metre-plus peaks of the main chain of the Andes to the west, Bolsón is notable for its high topographic prominence (it ranks 69th
Ojos del Salado of transverse valleys. Ojos del Salado like other major neighbouring mountains is a complex of lava domes and lava flows, with the main summit surrounded by peripheral domes such as El Solo and El Fraile and many other lateral centres. Fumaroles are encountered at the summit of Ojos del Salado within a depression. Potassium-argon dating has yielded ages of 1.2 ± 0.3 million years ago and less than 1 million years ago from rocks north of Ojos del Salado. There are glaciers on the mountain, in the crater and in the form of penitentes which reach heights of . Other