Pamukkale is a natural wonder in Turkey known for its white terraced mineral pools and calcified waterfalls that resemble snow or cotton. Hot springs below the mountain cause calcium carbonate to precipitate out of the water and solidify into travertine formations. Visitors can bathe in the pools, which are given a spectacular, changing appearance as the mineral-rich waters flow over successive steps and pools in colors that vary with the sunlight. The continuous erosion and transformation of the landscape through this natural process results in a highly unusual environment.