Ключевые слова: adventure, ambiance, ancient, artistry, attraction, beauty, betharram, breathtaking, cave, cavern, crystal, dark, dripstone, earth, environment, exploration, formation, formations, france, geological, geology, grotes, history, illumination, landmark, landscape, light, limestone, natural, nature, natures, patterns, rock, scenery, scenic, shine, stalagmite, structure, texture, tourism, travel, underground,