ナショナルジオグラフィックのインスタグラム(natgeo) - 10月7日 17時21分

Photo by @shonephoto (Robbie Shone) - A scientist measures the height of a 'notch' in the wall of the Sampling Cave, in Grottedalen (northeast Greenland). This study is part of the @negreenland_caves climate research project supported by the National Geographic Committee for Research and Exploration.

[BIHAKUEN]UVシールド(UVShield)

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