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
American Falls, Idaho in the American Falls area is excellent. With habitats such as marshes, lakes, ponds and riverine riparian the birder has much to choose from. American Falls is one of Idaho's most interesting birding areas with good birding year around. The Dam and cemetery overviews are good for viewing water birds and the local reservoir is excellent for shorebirds. The American Falls Reservoir has one of the highest concentrations of shorebirds in the state and is best visited in the fall for migratory species. The American Falls Fish Hatchery has a .75 mile nature and birding trail through Russian Olive trees