Araucaria araucana (monkey puzzle tree, pehuén) forms the treeline in this area. It is a very particular representative of the southern conifers. The species is very old and therefore often called a living fossil. It is native to a relatively small area in the Andes of the Sur Chico of Chile and adjacent Argentina. Volcán Llaima is seen in the central background. This 3125 m high stratovolcano is one of the most active volcanoes in Chile.