Slow motion shot of boat sailing out of cave with view to the limestone mountains in Ha Long Bay, Vietnam. Included in the list of UNESCO World Heritage

Themes and keywords: travel, cave, vietnam, mountain, tourism, nature, halong, bay, boat, tour, water, asia, landscape, limestone, sail, ha long, vacation, rock, river, trip, karst, seascape, scene, grotto, cliff, leave, explore, islet, wild, unique, summer, unesco, heritage, geology, slow mo, slow motion