ナショナルジオグラフィックのインスタグラム(natgeo) - 9月24日 09時33分

Photo by Robbie Shone @shonephoto / Postojna is a 24,340-meter (yard)-long karst cave system in southwestern Slovenia. It is the second longest system in the country as well as one of its top tourism sights. The caves were created by the Pivka River.

[BIHAKUEN]UVシールド(UVShield)

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