Ключевые слова: ancient, asia, background, beautiful, beauty, big, cave, caves, deep, entrance, forest, green, huge, inside, jungle, landmark, landscape, leaf, light, malaysia, mountain, national, natural, nature, old, park, prehistoric, rock, scenic, speleology, spelunking, stalactite, stalagmite, stone, thailand, tourism, tourist, travel, tree, tropical, vietnam, view, white,