Ключевые слова: abstract, adventure, attraction, backdrop, background, cave, cavern, caving, chamber, concept, dark, earth, entrance, environment, exit, exploration, explore, geologic, geology, grotto, hall, hole, illuminated, inside, karst, landscape, leaves, light, mountain, natural, nature, nobody, opening, rock, speleology, stone, structure, subterranean, texture, tourism, tourist, travel, tunnel, underground, wallpaper, way, wild,