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The dominant forests are ancient Araucaria (Pehuén), Coihue, Lenga, Ñirre, Oak, Raulí, Cordillera Cypress, Lleuque and Canelo Andean. The undergrowth includes hazelnut, maize, ferns, lichens and mosses, creating temperate and rainy environments. In autumn, oak and Raulí foliage stands out for its warm colors. It presents a majestic mushroom: fungi such as llao-llao, turkey tail and mycena, with key ecological functions
The park is home to a great diversity of species: mammals such as puma, pudú, guiña, quique, culpeous and screeching fox, mountain monkey, striped lizard, Darwin's frog, freshwater tollo and mountain viscacha. Birds: Andean condor, black-necked swan, steam duck, grey-headed goose, ibises, spectacled duck, neotropic cormorant, black and magellanic woodpecker, blackbirds, blackbirds, southern black parrots, southern parakeets, Cinclodes, white-throated creeper, white-throated whistle and eagles. Reptiles, native amphibians and toads are also found From papillae
