Toral floodplain and the Esla canal Nature · Toral de los Guzmanes, Esla-Campos, León A fertile plain hollowed out over millennia by the River Esla, closed off to the west by the stony slope that separates it from the Páramo. In the 19th century the Esla canal was opened here, with a fall that first drove a mill and later an electric turbine. Photo: Javier Revilla Casado (CC BY 3.0) What to see and do in Toral de los Guzmanes