Trout of the Carrión River Food and drink · Fresno del Río, Montaña Palentina, Palencia Image of Fresno del Río, not of the place itself. Trout fishing in the Carrión sustained for generations much of the population of this village lying at 1,020 metres above sea level, and trout remains one of the identity dishes of its kitchens. Photo: Rodelar (CC BY-SA 4.0) What to see and do in Fresno del Río