The Natural Park of the marshes of Odiel is one of the resorts most important estuarine marshes of the peninsula. As the Odiel goldsmith carves in the mud wounds left in the sea retreat. Tidal currents play a major role here being the direct cause of the formation of a set of printed tiles in the mud that defy reality. With the first rays of light and within 500 feet of altitude, these ephemeral artworks become genuine gold engravings which carved by the best goldsmith.