Guiana Shield is equally rich and 13,367 species of vascular plants have been found, approximately 40% of which is considered endemic. The shield is overlain by the largest expanse of tropical forest on any Precambrian shield area in the world. Guianan rain forest is similar in nature to Amazonian rain forest and known protected areas include the Iwokrama Forest of central Guyana, Kaieteur, Kanuku National Park of southern Guyana, the UNESCO World Heritage Site Central Suriname Nature Reserve of Suriname, the Guiana Amazonian Park in French Guiana and the Tumucumaque National Park in the Amapá State of Brazil. In Venezuela the forests
British Guiana shipped to British Guiana to renovate the aged system. The lines ceased to operate in 1972, but the large Central Station is still standing in Georgetown. Some of the inland mines still operate narrow-gauge lines. The British long continued the forms of Dutch colonial government in British Guiana. A Court of Policy exercised both legislative and executive functions under the direction of the colonial Governor (which existed from 1831 to 1966). A group known as the Financial Representatives sat with the Court of Policy in a Combined Court to set tax policies. A majority of the members of the Courts