ナショナルジオグラフィックのインスタグラム(natgeo) - 6月14日 06時31分

Photo by Robbie Shone @shonephoto | For millions of years, Lechuguilla Cave, in Carlsbad Caverns National Park, has been sealed off from humans—and this is why its otherworldly crystal formations are so pristine. Access to this cave is extremely difficult to obtain, and only researchers and scientists are allowed to enter for their work. This way the fragile formations remain.

[BIHAKUEN]UVシールド(UVShield) 更年期に悩んだら

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