A hillside staircase of terraced mineral pools in northern Iran, stained deep orange and red by iron-rich spring water and built up over thousands of years into stepped basins of travertine.
A pair of 'petrified waterfalls' in the mountains of Oaxaca — cliffs coated white by mineral springs — above natural infinity pools that hang over a vast valley.
The 'Cotton Castle' — a dazzling white hillside of terraced travertine pools formed by mineral-rich hot springs, where warm turquoise water spills over blindingly white stone terraces.
A landscape that steams, bubbles, and erupts — geysers, boiling mud pools, and mineral terraces in impossible colours, at the heart of Māori cultural life.
