The Nonguén National Reserve is located in the Province of Concepción, Biobío Region, and includes the communes of Chiguayante and Concepción. It was created on December 30, 2009 and covers an area of 3,036.9 hectares
The unit protects important wildlife species, among which mammals such as the mountain monkey, fox and pudú stand out. Among the amphibians, Darwin's frog is particularly recognized. Of the variety of birds that can be observed, the chuncho, the eaglet, the white owl, the rayadito and the chucao. As far as flora is concerned, this National Reserve protects the last important remnant of the deciduous forest of Concepción, which previously covered the mountain range along the coast and was replaced almost entirely by agricultural crops and forest plantations. In it you can find scarce species in this area.
Here more information in Spanish.
The Nongúen national park includes very nice hiking trails, of which the main ones are: