Katrina sent me photos of a famous formation in Turkey. For hundreds of years tourists have used them as hot springs. Of course people were damaging the geology. They are protected now.
Hierapolis-Pamukkale was made a World Heritage Site in 1988.
larger original – flickr
more interesting photos of Pamukkale, Turkey
Pamukkale, meaning “cotton castle” in Turkish, is a natural site and attraction in south-western Turkey in the Denizli Province.
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The effect of this natural phenomenon leaves thick white layers of limestone and travertine cascading down the mountain slope resembling a frozen waterfall. …
Pamukkale is a famous tourist attraction of Turkey. Tourists travel from the coast of Antalya and the Aegean Sea to Pamukkale, it is also recognized as a World Heritage Sites together with Hierapolis. Only a few other places in the world resemble it, including the Mammoth Hot Springs in the USA and Huanglong in Sichuan Province of China (another UNESCO World Heritage Site).
Rick McCharles 