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Rights: David Monniaux Creative Commons Attribution-ShareAlike 3.0 Unported Published 1 October 2012 Size: 210 KB Referencing Hub media

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.