The Rainbow Mountains of China within the Zhangye Danxia Landform Geological Park are a geological wonder of the world. These famous Chinese mountains are known for their otherworldly colors that mimic a rainbow painted over the tops of rolling mountains.

https://www.forbes.com/sites/trevornace/2016/03/02/rainbow-mountains-china-earths-paint-palette/?sh=223d61af3e5e