Several lesser-known natural wonders around the world offer unique experiences, including the world's largest salt flat lake that becomes a giant mirror during rains, a natural pink lake with an unexplained color, an island with distinctive dragon blood trees, a glowworm-lit cave, the only floating lake with Phumdis vegetation, the multicolored River of Five Colors, a flat-topped mountain inspiring famous films, a giant marine sinkhole for divers, and a hill that turns chocolate brown in the dry season. (Updated 18 Aug 2025, 15:16 IST; source: link)