Top 150 spectacular natural landmarks of the world (P.99) Roraima: A floating island shrouded in mystery
(WorldKings.org) Described as an "island" in the sky, Roraima has the most mysterious and ancient appearance in the world. The mountain is home to one of the oldest geological foundations, dating back to about 2 billion years ago.
(WorldKings.org) The purpose of the island settlements was originally defensive; if a threat arose the floating islands could be moved. The largest island retains a watchtower, as do most smaller islands.