A barrel or cask is a hollow cylindrical container with a bulging center, longer than it is wide. They are traditionally made of wooden staves and bound by wooden or metal hoops. The word vat is often used for large containers for liquids, usually alcoholic beverages; a small barrel or cask is known as a keg.
Traditional oak barrels made by Chilean cooperage Tonelería Nacional
Modern stainless steel casks and kegs outside the Castle Rock microbrewery in Nottingham, England
Wooden wine barrel at an exhibition in Croatia
Pyramidal pile of herring barrels in Scheveningen, the Netherlands, c. 1940
Port wine, or simply port, is a Portuguese fortified wine produced in the Douro Valley of northern Portugal. It is typically a sweet red wine, often served with dessert, although it also comes in dry, semi-dry, and white varieties.
Official guarantee label from a bottle of port
The vineyards that produce port wine are common along the hillsides that flank the valley of the River Douro in northern Portugal.