In 2011, an ex-CIA analyst discovered mysterious structures in the deserts near Kashgar, Western China. The structures included some large buildings as well as a big, U-shaped complex
Not a secret
But though the exact purpose is unclear, the sites are probably commercial or industrial locations experts say.
Though they are in the desert, they are near rail lines and the airport.
The structures aren't far from Kashgar, one of the main cities in the Xinjiang province of China.
In general, the region of Kashgar has been singled out by the Chinese government as a special economic zone that should undergo major development over the next several years. [See More Mysterious Structures in China Desert]