https://townsofusa.com/travels/2014/01/zhangye-danxia-geopark-in-china
Zhangye Danxia Geopark, China
Looks like someone took a paintbrush and painted the mountains with a lot of precision to get a smooth, sharp and colourful formation.
The sandstone deposits and minerals give a layered cake look, which is 24 million years old.