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
Alsea Falls Alsea Falls Alsea Falls, is a waterfall located in the heart of the Central Oregon Coast Range, just west of Monroe, in Benton County, in the U.S. state of Oregon. It totals 30 feet fall in one gradual cascade and is the centerpiece attraction of the Alsea Falls trailhead and Recreation Site. Alsea Falls is located along a Bureau of Land Management Back Country Byway surrounded by Oldgrowth Douglas fir and western redcedar forests. The waters of the Alsea Falls are located downstream of the South Fork Alsea River. The name of the waterfall and the river the forms it