Sierra de Espadán Natural Park Nature · Eslida, La Plana Baixa, Castellón The Sierra de Espadán Natural Park is one of the best-preserved natural areas in the Valencian Community, in the province of Castellón, and extends across nineteen municipalities in the interior of La Plana Baixa, among them Eslida. It was declared a natural park in 1996 and covers 31,180 hectares of a mountain range about 60 kilometres long that separates the basins of the Palancia and Mijares rivers, with mountains barely exceeding a thousand metres, such as Pico Espadán. It holds the largest cork oak forest in the region, favoured by its sandstone soils, together with pine woods of pino rodeno (a local Aleppo-type pine), chestnuts, yews and strawberry trees, as well as olive, almond and cherry orchards in the valleys. The only river of any size crossing it is the Veo river. Photo: Thisisthenature (CC BY-SA 4.0) What to see and do in Eslida