The Duero and the Tordesillas canal Nature · San Miguel del Pino, Tierra del Vino, Valladolid Image of San Miguel del Pino, not of the place itself. The Duero marks the natural boundary of the municipal district, through which the Tordesillas canal also runs; the elevations drop from the 705 metres of the western moorland to the 670 of the riverbank, 26 kilometres from Valladolid. Photo: David Perez (CC BY 3.0) What to see and do in San Miguel del Pino