This is Jupiter Terrace, part of the Mammoth Hot Springs area in the north-west corner of Yellowstone, near the Montana border. The hill that forms the horizon was formed entirely by hot, mineral-rich water from the hot springs above depositing the mineral travertine as it cools. The springs vary in their flow but, in active years, the terraces can advance by as much as a couple of feet and boardwalks and even parts of buildings have been engulfed.
The orange colour here is those bacteria again. There's no major editing: the rocks really are that grey and the run-off channel really is that orange. And yes, while those of us in the UK might not remember it, the sky really is blue sometimes.
All comments and criticism welcome.
Tuesday, 23rd June, 2009.
40mm, f/11, 1/400s, ISO-200.
Landscape and travel
Yellowstone national park
Mammoth hot springs
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