Ключевые слова: abstract, amazing, ancient, astonishing, beautiful, bright, cave, cavern, caving, darkness, deep, entrance, excite, exploration, faraway, geological, hallow, hole, huge, inside, interior, landmark, landscape, light, limestone, marvelous, miraculous, mountain, mysterious, natural, nature, outstanding, phenomenal, rock, scenic, shadow, solid, speleology, stalactite, stalagmite, stone, texture, thailand, tourism, travel, tree, tunnel, underground, wall, wonderful,