A mystic, flat-topped mountain Mount Roraima on the Venezuela–Brazil border that perplexed 19th-century explorers and inspired Conan Doyle‘s ‘The Lost World’ novel mesmerizes with a unique ecosystem that can only be found above the clouds. Mount Roraima has a 31 km2 plateau summit area bounded on all sides by cliffs rising 400 meters. This unique mountain is attracting ever more modern-day adventurers.