![800 outdoor enthusiasts challenge Danxia landform (5/5)](http://www.ecns.cn/hd/2018/05/21/a6b18b2089ef4abf9614c327d484bae2.jpg)
Outdoor enthusiasts hike along Danxia landform in Sunan Yugur Autonomous County, Gansu Province, May 19, 2018. More than 800 people participated in a hiking adventure that took in the Danxia landform, a unique terrain formed from red sandstone and characterized by steep cliffs. (Photo: China News Service/Zhang Yuan)