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Travertine terraces
Travertine terraces at Mammoth Hot Springs, Yellowstone National Park, USA.
Travertine forms as a result of calcium carbonate precipitation from geothermal waters. Over time, the deposited travertine has built up to form terraces.
Rights: David Monniaux CC BY-SA 3.0 Unported
Published: 1 October 2012,Updated: 1 October 2012Size: 909.53 KB
