The high mountain climate is cold and wet precipitation as snow or hail in all seasons, low relative humidity, high temperature range between day and night frosts, strong winds and high radiation. During the winter it is covered by a blanket of snow that usually exceed one meter thick.
Although observed from a distance, the tops of the mountains seem to be only rock and snow devoid of life, there are hundreds of grow and reproduce in the short snow-free season, challenging the extremely harsh conditions.
The vegetation is characterized by its small size, is stunted or cushion-shaped, leaving much of the bare soil. Predominant compound species and grasses. In this area there are three endemic species unique to this park: Abrotanella diemii, Senecio Menonvillea carbonensis and hirsuta.
This environment is one that has less richness in wildlife, finding so far 49 species of vertebrates. Of these, 40% drop this unit in the winter. We can mention the Pilquín or Chinchillón, an inhabitant of rocky places. Among small rodents are el Ratón de Pelo Largo y el Pericote Patagónico; el Ratón Topo Grande y el pardo, que pasan la mayor parte del tiempo bajo tierra.
Es zona de nidificación del Cóndor, y en los afloramientos rocosos son comunes los yales y dormilonas. No se encuentran aves y mamíferos acuáticos, debido tal vez a la escasez de alimento y de sitios de refugio en los cuerpos de agua.
También se encuentran lagartijas, ya que por ser resistentes al frío y vivíparas pueden vivir en ambientes de altura.
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