Pine forest of Lillo Nature · Puebla de Lillo, La Montaña de Riaño, León Image of Puebla de Lillo, not of the place itself. A hundred and sixty hectares of Scots pine with thousand-year-old specimens at the spot known as Villaoscura, the westernmost stand of this kind on the Iberian peninsula and a survivor of a failed public auction in 1870. Photo: Pablox (CC BY-SA 3.0) What to see and do in Puebla de Lillo