ナショナルジオグラフィックのインスタグラム(natgeo) - 2月4日 00時25分

Photo by @salvarezphoto (Stephen Alvarez) At 586 feet deep Fantastic Pit is the deepest freefall shaft in the lower 48 United States. It augers through Pigeon Mountain like a railway tunnel turned on end and remains one of the most spectacular underground places I have ever photographed. #cave #georgia #explore

[BIHAKUEN]UVシールド(UVShield)

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