ナショナルジオグラフィックのインスタグラム(natgeo) - 8月20日 20時12分

Photo by @shonephoto (Robbie Shone) - Inside the Hochkogel mountain in the Tennengebirge section of the Austrian Alps lies one of my favourite ice caves. Eisriesenwelt is the largest ice cave in the world, extending more than 42 km (26 miles). It's been a couple of years since I was last inside but I'm super pleased to be back for another assignment. The spectacular ice formations change shape from year to year due to the difference in weather during the winter season.

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