Ключевые слова: adventure, ancient, asia, background, bat, beautiful, beauty, borneo, cave, cavern, caves, caving, chamber, dark, deer, entrance, explore, forest, formation, geology, green, gunung, heritage, landscape, light, limestone, malaysia, mountain, mulu, national, natural, nature, park, quiet, rock, sarawak, stone, sun, tour, tourism, tourist, travel, tree, tropical, tunnel, underground, view, wall, wind, world,