We can give you a extend and complete description of what a glacier is, but.... Have you ever been in front of one?. There isn't valid words to describe one of the most important natural monuments of this world.
Plan at least one stop to contemplate and give them your respect.
5 most amazing glaciers of Chile:
A glacier is a persistent body of dense ice that is constantly moving under its own weight; it forms where the accumulation of snow exceeds its ablation (melting and sublimation) over many years, often centuries. Glaciers slowly deform and flow due to stresses induced by their weight, creating crevasses, seracs, and other distinguishing features. They also abrade rock and debris from their substrate to create landforms such as cirques and moraines. Glaciers form only on land and are distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water.