ナショナルジオグラフィックのインスタグラム(natgeo) - 6月29日 11時35分

Photo by Robbie Shone @shonephoto A geologist studying caves enters a small chamber containing stunning, cloud-like formations known as mammillaries. These formed underwater, when the lake level was much higher than it is today.

[BIHAKUEN]UVシールド(UVShield)

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