The Danxia scenic area in north-west China is a landform of reddish sandstone which has been eroded to create these unusual rock formations. The unusual colors of the rocks is the result of this red sandstone and mineral deposits being laid down over 24 million years. The process of development of these landforms is characterized by a particular rock sequence, tectonic background, climatic conditions and erosional processes.
The Danxia landform hosts a set of weird and wonderful mountain shapes including natural pillars, towers, ravines, valleys and even waterfalls – that differ in colour, texture, shape, size and pattern. This Danxia region of China is listed as a UNESCO World Heritage site since 2010 and has become a popular tourist attraction for the town of Zhangye.
Interestingly, there is a similar land formation in British Columbia called the Rainbow Range, which is formed from a mixture of volcanic rock and various minerals.