Pamukkale Terraces

Cascading white travertine pools fed by thermal springs in Turkey/Natural Wonders

Pamukkale, meaning 'cotton castle' in Turkish, is a geological wonder in southwestern Turkey where mineral-rich thermal waters have deposited brilliant white travertine terraces over hundreds of thousands of years. The formation stretches approximately 2,700 meters in length, 600 meters in width, and rises about 160 meters above the valley floor. The thermal springs emerge at roughly 36 degrees Celsius and carry dissolved calcium carbonate that precipitates as the water cools, building up the terraces at a rate of a few millimeters per year. The ancient Greco-Roman city of Hierapolis was built directly above the terraces, and its ruins remain a UNESCO World Heritage Site alongside the natural formation.