Answer:
High mountains are places conducive to ice accumulation due to the ever-low temperatures due to restricted solar radiation. This external agent acts from the accumulation of ice on the top of mountains, which, when it becomes very heavy, causes avalanches, which slide and transport some rocks with the ice. The result of this event is a change in the mountaintop configuration as well as increased sediment in nearby regions, usually valleys. The action of glaciers in the formation of relief is called glacial erosion.