"Vast, unidentified, structures have been spotted by satellites in the barren Gobi desert..."

"... raising questions about what China might be building in a region it uses for its military, space and nuclear programmes."

In two images, available on Google Earth, reflective rectangles up to a mile long can be seen, a tangle of bright white intersecting lines that are clearly visible from space.

Other pictures show enormous concentric circles radiating on the ground, with three jets parked at their centre.