People bathing in mineral terraces. The terraces form at the outflow of geothermal springs. The water,heated under pressure deep underground,dissolves large amounts of minerals from the surrounding rocks and then deposits them at the surface as it cools. The white material on the terraces in the foreground is the mineral travertine (calcium carbonate). Photographed in Saturnia,Tuscany,Italy | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Craddock, Tony |
Bildgröße: | 4800 px × 3600 px |
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