Ключевые слова: cave, cluj, corridor, dark, deep, depth, digging, europe, exploration, gallery, handmade, history, illuminated, industrial, industry, inside, interior, light, long, mine, mine site, mineral, mining exploration, mining site, museum, mystery, old, passage, perspective, pit, rock, romania, salina, salt, salt mine, salty, site, stage, stone, transylvania, travel, tunnel, turda, underground, underground mine, underground mining, underground tunnel, view, wall,