Los Ancares is a district in northern Spain, which is noted for its unspoilt landscapes and ecological importance.
The area takes its identity from the Sierra de los Ancares

Serra dos Ancares

The Serra dos Ancares is a mountain range in north-west Spain, extending in a south-westerly direction from the western end of the Cantabrian Mountains in Asturias....

 mountains which form a political and linguistic boundary between the autonomous communities of Galicia and Castile and León

Castile and León

Castile and León is an autonomous community in north-western Spain. It was so constituted in 1983 and it comprises the historical regions of León and Old Castile...

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The Spanish

Spanish language

Spanish , also known as Castilian , is a Romance language in the Ibero-Romance group that evolved from several languages and dialects in central-northern Iberia around the 9th century and gradually spread with the expansion of the Kingdom of Castile into central and southern Iberia during the...

 term Los Ancares Leoneses is sometimes used to refer to the zone on the Castile and León side of the sierra, which is in the basin of the river Sil. Los Ancares Lucenses is the corresponding term for the Galician side of the sierra: in the Galician language

Galician language

Galician is a language of the Western Ibero-Romance branch, spoken in Galicia, an autonomous community located in northwestern Spain, where it is co-official with Castilian Spanish, as well as in border zones of the neighbouring territories of Asturias and Castile and León.Modern Galician and...

, the name is Os Ancares

Os Ancares

Os Ancares is a comarca in the Galician Province of Lugo. The overall population of this local region is 13,888 .A range of mountains called in Galician the "Serra dos Ancares" forms the border with the neighbouring autonomous community of Castile and León where there is an area called Los...

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World Heritage Site

The area is a projected World Heritage Site

World Heritage Site

A UNESCO World Heritage Site is a place that is listed by the UNESCO as of special cultural or physical significance...

, which would also include Somiedo Natural Park

Somiedo Natural Park

Somiedo Natural Park is a natural park located in the central area of the Cantabrian Mountains in the Principality of Asturias in northern Spain....

in Asturias.