Ключевые слова: activity, asia, attraction, bay, beautiful, bo hon, cave, ceiling, chamber, colorful, destination, experience, floor, formation, geological, geology, golden, grotto, ha, ha long, halong, hanoi, heritage, landscape, light, limestone, long, national, natural, nature, rock, scene, sightseeing, stalactite, stalagmite, stone, sun, sung sot, surprise, tour, tourism, tourist, travel, trip, vacation, vietnam, view, visit, world,