Mount Roraima is the highest of the Pakaraima chain of tepui plateau in South America. First described by the English explorer Sir Walter Raleighin 1596, its 31 km summit area is defended by 400-metre-tall cliffs on all sides. The mountain includes the triple border point of Venezuela, Brazil and Guyana.
Mount Roraima lies on the Guiana Shield in the southeastern corner of Venezuela's 30000 km Canaima National Park forming the highest peak of Guyana's Highland Range. 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.
The highest point in Guyana and the highest point of the Brazilian state of Roraimalie on the plateau, but Venezuela and Brazil have higher mountains elsewhere. The triple border point is at5°12?08?N 60°44?07?W, but the mountain's highest point is Maverick Rock, 2810 m, at the south end of the plateau and wholly within Venezuela