Guiana Shield Guiana Shield The Guiana Shield is one of the three cratons of the South American Plate. It is a 1.7 billion-year-old Precambrian geological formation in northeast South America that forms a portion of the northern coast. The higher elevations on the shield are called the Guiana Highlands, which is where the table-like mountains called tepuis are found. The Guiana Highlands are also the source of some of the world's most spectacular waterfalls such as Angel Falls, Kaieteur Falls and Kuquenan Falls. The Guiana Shield underlies Guyana (previously British Guiana), Suriname (previously Dutch Guiana) and French Guiana (or Guyane), most of
British Guiana United Kingdom on 26 May 1966. The English made at least two unsuccessful attempts in the 17th century to colonise the lands that would later be known as British Guiana, at which time the Dutch had established two colonies in the area: Essequibo, administered by the Dutch West India Company, and Berbice, administered by the Berbice Association. The Dutch West India Company founded a third colony, Demerara, in the mid-18th century. During the French Revolutionary Wars of the late 18th century, when the Netherlands were occupied by the French, and Great Britain and France were at war, Britain took over