What is China Building in the Desert?

The slideshow depicts wide, irregular lines, enormous factories and a circumferential design with airplanes in the center. According to HuffPost,

"Earlier this week, images from Google Maps surfaced showing a bizarre tangle of white lines etched into the Kumtag Desert in northwestern China. According to Gizmodo, the lines cover an area approximately one mile long by more than 3,000 feet wide.

Since the initial finding, however, people have discovered a number of other strange structures in the Chinese desert. Along with another, similar collection of white lines, there are also huge complexes that that resemble anything from a collection of antennas to a collection of water cooling tanks to targeting grids for spy satellites.

Military experiments or the remnants of some alien culture come to earth? No one's really sure."