They bring water from 35 degrees Celsius to nearly 100 degrees Celsius to the surface. The water coming to the surface, saturated with calcium carbonate and carbon dioxide, cools down and degasses, and the calcium carbonate in the form of a gel is deposited to crystallize after some time.
As a result of this process, unique stalactites, waterfalls, sills, and elliptical pools of thermal water preceded by dams have formed on the slope of Mount Cökelez, where water has been flowing for about 14.000 years. It is estimated that the travertines are currently 160 meters thick and extend over an area of 2700 meters and 600 meters wide.