Somewhere deep in the ground beneath Pamukkale (which in Arabic means "cotton castle") and the ancient Roman city of Hierapolis, there is a great source of water heated by lava, and the water dissolves pure white calcium, becomes saturated with it and carries it to the surface of the earth where it erupts and flows. On a steep hillside, cooled in the open air, calcium precipitates and sticks to the soil and forms white calcium “waterfalls” frozen in stone called travertine. Come and enjoy the health benefits of hot mineral water and the amazing view that this unique natural phenomenon provides.