Ключевые слова: alb, bad urach, carst, carstic, cave, cave entrance, cavity, dark, darkness, eerie, entrance, falkensteiner hoehle, geology, germany, hiding, hollow, hollow space, jura, jurassic, jurassic age, karst, karstic, karstified, landscape, mountain, mountain range, nature, nature conservation, nature landscape, nature reserve, no one, nobody, picturesque, portal, rock, rocks, scary, stone, stones, swabia, swabian, swabian alb, urach, weathered, weathering, wuumlrttemberg,