Ключевые слова: adventure, age, air, ancient, black, carving, cave, cavern, caverns, caves, caving, claustrophobic, coal, damp, dangerous, dark, darkness, discovery, explore, explorer, fear, hard, hole, human, inside, life, light, lost, male, man, miner, mysterious, mystery, person, rock, shadow, shine, sightseeing, signal flare, silhouette, speleology, spooky, stone, through, torch, travel, tunnel, underground, way, young,