pamukkale - cotton castle, denizli province in southwestern turk

antalya attraction calcareous calcic calciferous calcium carbonate castle chalk chalky cotton denizli deposit famous formation geognosy geological geology geothermal hierapolis interest lime limestone limy marvel mineral miracle natural pammukale pamukale pamukkale place pool rock source springs terrace thermal tourist travelling travertin travertine turkey turkish unesco unique vacations water white wonder