From the top of Mount Roraima, millions of liters of water are drained, forming several incredible high waterfalls (named “Roraima Falls”), which drop the 400-metre (1312 ft.) tall cliffs of the tepuy. With 2810 meters (9220 ft.) high and a 31-km2-summit area, the mountain is on the triple border point of Venezuela, Brazil and Guyana. This tabletop mountain is considered one of the oldest geological formations on Earth, dating back to some two billion years ago. Its summit can be reached by walking expeditions usually initiated by the Venezuelan side, from the town of Santa Elena de Uairén. Mount Roraima inspired the English writer Sir Arthur Conan Doyle, the creator of Sherlock Holmes, to write the fiction, “The Lost World”.