Sunset at Mount Roraima or Roraima Plateau ( also known as Roraima Tepui or Cerro Roraima in Spanish, and Monte Roraima in Portuguese ) in Canaima National Park, this is the highest of the Pakaraima chain of tepui plateau in South America. Mount Roraima lies on the Guiana Shield in the southeastern corner of Venezuela's Canaima National Park. The tabletop mountains of the park are considered some of the oldest geological formations on Earth, dating back to some two billion years ago in the Precambrian Era. The mountain includes the triple border point of Venezuela, Brazil and Guyana.