a cavern with many stalagmites and stalactites, illuminated by a natural light source, showing the beauty of nature

39aph39 adventure amazing ancient awe beautiful beauty cave cavern dark destination dramatic earth environment exploration fantastic formation formations geology geomorphology hidden history illuminated impressive landscape light magical mineral mysterious natural nature old picturesque planet preservation rock s scenic secret shadow showing source spectacular stalactite stalactites stalagmite stalagmites time tourism travel underground unique vacation wonder world