ナショナルジオグラフィックのインスタグラム(natgeo) - 2月23日 06時03分

Photo by Robbie Shone @shonephoto | An Italian explorer traverses a canyon, avoiding the deep, cold water below a thin unstable crust of ice inside a moulin on the Gorner Glacier, Switzerland. Progress is often slow when the floor is dangerously unstable, like it is here. This was the first of many glacier caves we descended during our recent expedition to the area.

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