With an area of 555 square kilometres, Fuentes del Narcea, Degaña e Ibias Nature Park is one of the richest nature areas along the northern coast of Spain. What's more, there are also two nature areas of great interest within the park: Muniellos Forest Nature Reserve and El Cueto de Arbás Partial Nature Reserve.
The landscape of the park affords a wide variety of nuances which are uniquely revealed in each of the boroughs comprising it; in the area of Cangas del Narcea, the terrain is steep and rugged, while the River Narcea and its numerous tributaries offer ideal spots for trout and salmon fishing. This area also includes the enchanting Muniellos Forest, visits to which remain restricted so as to preserve its exceptional environment intact. Hunting for some of its many wildlife species, such as deer and wild boar, is permitted in other forested areas in the borough.
High mountain ranges and green valleys abound in the borough of Degaña. Its landscape constitutes one of the most typical ecosystems of the Cantabrian Mountains. It is home to forests of pedunculate oak and other species, such as birch, yew and holly, and to wildlife, including endangered species such as the bear, wildcat and capercaillie. Degaña is also a Regional Game Reserve greatly valued by hunters.
The third borough included in the park is Ibias. An extensive area of more gentle mountainous terrain provides for a landscape of great beauty and rich vegetation. Mount Valdebois, in the forest of Muniellos, is its most important enclave. The sources of the River Ibias and its tributaries bathe the mountain ranges and valleys with crystalline waters. Ibias has evidence of being populated during the Stone Age, the era of hill forts and the Roman period. Dolmens in Pradías and Chao Leda fuse history, culture and art with the spectacular nature of spots such as Muniellos and Los Ancares.
Worthy of note throughout the borough of Ibias is the popular architecture of hórreos (raised granaries-cum-storehouses) and pallozas (stone and thatch cabins which are an evolution of hill fort dwellings).
It was declared a Nature Park in 2002 and a Biosphere Reserve in 2003.