Les montagnes Arc-en-ciel. Chine 中国甘肃 彩虹山区：张掖丹霞国家地质公园 Rainbow Mountains: Zhangye Danxia National Geological Park Automatique 自动放映
A boy walks through the Martian landscape. Picture: Amos Chapple / Rex Features 张掖丹霞国家地质公园坐落于甘肃境内，张掖市附近，面积 510 平方千米， 是中国最美的地貌之一。
The Zhangye Danxia Landscape — Red Rocks and Rainbow Ridges 张掖丹霞风光 红色岩石 与 彩虹山脊 Les montagnes font partie du Danxia Géoparc Zhangye dans la province chinoise du Gansu. Il s'agit d'une zone à faible pluviométrie proche du désert de Gobi. Il couvre 300 kilomètres carrés. Ce spectacle de strates colorées aléatoires a été formé par des dépôts successifs de différents minéraux dans les couches de roches.
Two tiny figures walk on a boardwalk among colourful rock formations at the Zhangye Danxia Landform Geological Park in Gansu Province, China. The unusual colours of the rocks are the result of red sandstone and mineral deposits being laid down over 24 million years. Picture: Amos Chapple / Rex Features ↙ 两个人在攀爬
The resulting 'layer cake' was then buckled by the same tectonic plates responsible for parts of the Himalayan mountains. Wind and rain finished the job by carving weird and wonderful shapes including natural pillars, towers, ravines, valleys and waterfalls - that differ in colour, texture, shape, size and pattern.Picture: Amos Chapple / Rex Features
The area is fast becoming a popular tourist attraction for the sleepy town of Zhangye. A number of boardwalks and roads have been built to encourage visitors to explore the amazing rock formations.
Quelques millions d'années plus tard, la collision des plaques tectoniques indo-australienne et eurasienne a provoqué des ondulations qui ont abouti à ce paysage impressionnant et surréaliste.
终 Workers building paths in the Zhangye Danxia Landform Geological Park Picture: Amos Chapple / Rex Features