ナショナルジオグラフィックのインスタグラム(natgeo) - 7月18日 03時48分

Mammoth Springs, Yellowstone NP, WY. Photo by @peteressick. William Henry Jackson photographed here during the Hayden Expedition of 1871. In the visitor center nearby Jackson's 8x10 view camera that he used on the trip as well as several of his albumen prints are on display. The thermal area looked very different in 1871 and is constantly changing sometimes overtaking trees in the process.

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