Ключевые слова: africa, ancient, archeology, arid, cango, cave, cavern, cliff, damp, dark, discovery, east, geology, historical, history, karoo, klein, landmark, landscape, limestone, little, minerals, monument, nature, oudtshoorn, postojna, river, rock, slovenia, south, speleological, stalactites, stalagmites, stone, travel, underground, water, wet,