Fingerprint in the cotton
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Fingerprint in the cotton

by Petra Schneider, Department of Geology, Faculty of Science, University of Zagreb, Zagreb, Croatia

This photo is taken at the Pamukkale (meaning "cotton castle" in Turkish), a natural site near Denizli, Turkey. This location is world famous for terraces made of snow-white travertine, a sedimentary rock deposited by water from the hot springs, and a stunning turquoise water color. Close look at the surface texture reveals an extraordinary pattern created by the thermal water slowly flowing down the hillside.
(Photo is approx. 30cm wide)