![](http://www.ecns.cn/hd/2022/05/06/3e92b6a0b3ce41aeba67488d62ef0fd8.jpg)
A mysterious pattern is spotted near the "Devil's Eye", Aiken Spring, in Qaidam Basin, northwest China's Qinghai Province, May 5, 2022. The round pits on the ground are a former inhabitant's den, with traces of burned carbon near them, according to local people. (Photo proivded to China News Service)
![](http://www.ecns.cn/hd/2022/05/06/e07b828cfeb748e28946290977c4b128.jpg)
A mysterious pattern is spotted near the "Devil's Eye", Aiken Spring, in Qaidam Basin, northwest China's Qinghai Province, May 5, 2022. The round pits on the ground are a former inhabitant's den, with traces of burned carbon near them, according to local people. (Photo proivded to China News Service)
![](http://www.ecns.cn/hd/2022/05/06/b262698b70e24fac9f488c55d77ce978.jpg)
A mysterious pattern is spotted near the "Devil's Eye", Aiken Spring, in Qaidam Basin, northwest China's Qinghai Province, May 5, 2022. The round pits on the ground are a former inhabitant's den, with traces of burned carbon near them, according to local people. (Photo proivded to China News Service)
![](http://www.ecns.cn/hd/2022/05/06/747c7268934f476aa44fb6ce4f4b2ccd.jpg)
A mysterious pattern is spotted near the "Devil's Eye", Aiken Spring, in Qaidam Basin, northwest China's Qinghai Province, May 5, 2022. The round pits on the ground are a former inhabitant's den, with traces of burned carbon near them, according to local people. (Photo proivded to China News Service)
![](http://www.ecns.cn/hd/2022/05/06/28ef81328d954ee4a6bb61a639a25eda.jpg)
A mysterious pattern is spotted near the "Devil's Eye", Aiken Spring, in Qaidam Basin, northwest China's Qinghai Province, May 5, 2022. The round pits on the ground are a former inhabitant's den, with traces of burned carbon near them, according to local people. (Photo proivded to China News Service)