Mount Roraima: Mount Roraima is the highest of the Pakaraima chain of tepui plateau in South America. First described by the English explorer Sir Walter Raleigh in 1596, its 31 km2 summit area is defended by 400-metre-tall cliffs on all sides. The mountain includes the triple border point of Venezuela, Brazil and Guyana and was the inspiration for Paradise Falls in the 2009 Pixar film, Up, as well as for Sir Arthur Conan Doyle’s novel, The Lost World.