ナショナルジオグラフィックのインスタグラム(natgeo) - 3月7日 23時07分

Photo by Robbie Shone @shonephoto | Deep inside the Gorner Glacier, Switzerland, a member of our team of Italian explorers ascends a rope through a narrow slot in beautifully sculptured ice. As a result of the glacier's movement, such moulins don't exist for long. It's therefore crucial to carry out thorough documentation—next year this cave will be gone.

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