Ключевые слова: abstract, ancient, big, black, bright, cave, caver, cavern, dark, darkness, deep, earth, eerie, entrance, environment, explorer, fantasy, geologic, ground, hole, huge, human, inside, landscape, light, man, mysterious, mystery, natural, nature, reflection, rock, sand, serenity, shadow, silhouette, speleology, stone, texture, tunnel, underground, wall, water, wild,