A view of the River Tamar at Calstock, with a railway viaduct crossing it, on the Devon-Cornwall border, Cornwall, England, United Kingdom, Europe

a view river tamar calstock with railway viaduct crossing it devon cornwall border cornwall england united kingdom europe viaduct railway bridge stone arches river wales aerial view engineering landscape nature green vegetation sky clouds boats docked water calm scenic picturesque travel destination history architecture landmark tourism transport transportation infrastructure rural countryside beautiful stunning amazing awesome majestic grand impressive