Ключевые слова: ancient, beam, beauty, cave, cavern, color, dark, day, deep, depth, discovery, earth, entrance, faith, floor, formation, geologic, geology, image, imagination, inside, inspiration, landscape, light, limestone, mountain, natural, nature, nobody, optimism, outdoors, phetchaburi, ray, reflection, rock, shadow, stalactite, stalagmite, stone, sun, sunbeam, sunlight, sunshine, thailand, tourism, tranquillity, travel, tunnel, underground, wall,