Ключевые слова: abbys, abyss, adventure, area, art, beautiful, beauty, boat, calcium, carst, cave, czech republic, deep, excavate, explore, formation, fun, hike, holidays, karst, kras, limestone, macocha, moravia, national park, nature, nature arts, outdoors, protected, river, rock, speleology, stalactite, stalagmite, tour, travel, trip, underground, underground river, vacation, visit,