Pamukkale is the object of the UNESCO World Heritage List. It is situated on the earth’s crust cracks. Pamukkale, meaning "cotton fortress" is a dazzling white terraces (travertine) and limestone stalactites formed by hot springs. Famous for its limestone deposits formed on the mountainside Cökelez. Hot water is flowing from the source, rich in calcium compounds and carbon dioxide, cooling on the surface of precipitated calcium carbonate that deposits are arranged in stalactites and stalagmites. On the mountainside, using the terrain, created thresholds, semi-circular and elliptical thermal water pools, shaped in the form of terraces, separated by a roundworm firewalls, after which the water flows. This process continued uninterrupted for about 14,000 years. Pamukkale is one of Turkey’s top attractions and a precious in the world with its cotton-look terraces. The underground water helps Pamukkale be one of the most important thermal centers of Turkey.