In the event of the preparation of a susceptibility map to the mass removal processes that affect the town of Puente del Inca, the controversial genesis of the Horcones deposit was reviewed. The morphology of the deposit and the surrounding landscape, the mineralogy and texture of its materials were analyzed and finally radiometric dating was performed. Based on these studies, it is concluded that the Horcones deposit is the result of a saturated flow derived from a rock avalanche or mega-slide, caused by the collapse of a watershed on the southern wall of Mount Aconcagua, during times late glacial or postglacial Aconcagua 360 Route. Deposits similar to Horcones fill the Cuevas river valley to the east and are covered by others, which were also previously considered glacial (e.g. terminal moraine of the Penitentes Drift). The analysis of this material in the vicinity of the town of Penitentes, using a similar methodology, reveals that it corresponds to a large-scale flow coming from the Mario Ardito creek. According to these new interpretations, the need to carry out an exhaustive review of the glacial stratigraphy in the area is clear. New ideas also arise regarding the genesis of the Puente del Inca natural monument. Finally, understanding the geomorphological evolution of the southern wall of Mount Aconcagua sheds light on the Horcones glacier surges. The southern wall of the How to Climb Aconcagua hill (6,965 m a.s.l.) constitutes an unusual morphological feature; With a drop of around 2,700 m, it is one of the great walls of the Earth. In it, rocky outcrops alternate with hanging glaciers, from which ice avalanches break off, giving this slope a greater risk. We rarely stop to think how these walls originated or, if we do, we combine: tectonic ascent, erosion and thousands of years, to finally give rise to a free interpretation. In the case of the southern wall of Aconcagua, among the erosive processes that the Aconcagua Guided Climb modeled, there were no less than two rock avalanches, which we will also call mega-slides (because of their enormous volume), which originated flows whose deposits have been previously interpreted by other authors as glaciers. The discrepancies about deposits assigned indistinctly to the Pleistocene glaciations or to mass removal are long-standing in our geological literature. During the studies carried out in the foothills of Mendoza, Dessanti (1946) described the “Morena del Quemado”, reinterpreted by Polanski (1953) as Cenoglomerate del Quemado and assigned to flows associated with rising debris. In fact, based on the different interpretation criteria of the deposit, the existence of an extensive englazation of the piedmont was being discussed.