アメリカ内務省のインスタグラム(usinterior) - 10月29日 06時47分

Swaying prairie grasses, forested hillsides, and an array of wildlife such as bison, elk, and prairie dogs welcome visitors to one of our country’s oldest national parks and one of its few remaining intact prairies. Secreted beneath is one of the world’s longest caves, Wind Cave. Named for barometric winds at its entrance, this complex labyrinth of passages contains a unique formation – boxwork. Photo: Darcy Sime #publiclands #windcave #cave #caves #southdakota #dakotas #wildlife #bison #animals #nature #naturelovers #instacool #instagood #instanature #bestoftheday #photooftheday #autumn #fall #travel #hiking #nofilter

[BIHAKUEN]UVシールド(UVShield)

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