Ключевые слова: cave, caves, caving, crust, dark, discover, earth, europe, exploration, explorer, friuli, giant, giulia, head lamp, helmet, indoor, italya, landmark, large, light, men, natural, nature, people, person, red, rock, south, stalactites, stalagmites, stone, tourism, tourists, travel, trieste, underground, venezia, visiting, white,