Friday, November 18, 2011

[Daily Photo] Black Opal Pool in Biscuit Basin, Yellowstone

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This is the "Black Opal Pool" in "Biscuit Basin" of Yellowstone. The name "Biscuit Basin" comes from the mineral deposits around the fringe of Sapphire Pool. It is a hot spring. (You can judge by the steam above the pool surface.) However, it does not erupt like a geyser (間歇泉).  The two blue pools are where the hot water comes from.

Black Opal Pool in the Biscuit Basin, Yellowstone

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