Ключевые слова: ancient, beautiful, beauty, blue, cave, cavern, caves, caving, color, colorful, dark, deep, drach, exploration, formation, geology, green, grotto, inside, interior, karst, landmark, landscape, light, limestone, mineral, mountain, national, natural, nature, nerja, park, people, postojna, red, rock, shadow, slovenia, speleology, stalactite, stalactites, stalagmites, stone, texture, tourism, travel, underground, wall, water,