Ключевые слова: adventure, angles, awe, beauty, breathtaking, cave, cavern, challenge, climate, dark, dim, discovery, environment, exciting, exotic, exploration, features, formation, formations, geological, geology, group, hidden, illumination, journey, landscape, lighting, lover, memorable, mystery, natural, nature, outdoors, phenomenon, photographic, picturesque, remote, rugged, scenery, scenic, serenity, shadows, skirt, spelunking, stalactites, stalagmites, system, tranquil, traveler, trip, underground, unique, walker, wanderlust,