English: This photo shows travertine terraces in Pamukkale, Turkey. For many thousands of years, water saturated with minerals has left behind a precipitate of calcium salts, mainly from calcium carbonate, thereby forming unusual stepped geological forms. Recently, due to climate change, precipitation in this region has decreased, which caused many travertines to dry up. The necessary streams of water were transported to a nearby village, so many of today's tourists walk on the water that gets into the houses of local residents.