[奧地利]薩爾斯堡冰洞歷險記：世界最大的冰洞 Werfen Eisriesenwelt
在薩爾斯堡的Eisriesenwelt冰洞是世界上最大的冰洞之一，全長42公里中的1公里，開放給民眾參觀70分鐘的冰洞導覽。 The Eisriesenwelt cave in Salzburg, known as the world's largest ice cave, offers an exhilarating adventure to visitors. The cave extends about 42 kilometers, only 1 km of which is open to tourists. It's full of stunning glacial structures. The cave offers guided tours for approximately 70 minutes. It's recommended to book tickets online and brings warm clothing, good walking shoes, gloves as the temperature in the cave is below zero even in summer. It was discovered in 1879 and opened to the public in the early 1920s.