Гэнгчэнг

Due to lack of rainfall and desertification of the area, this largest reservoir in Asia, is almost dry.

This facility looks very similar (almost identical) to the one north of beijing that is being used as the avaition museum. the arrangement of having a main airbase with a long taxiway and large underground hanger is identical. I have been to the museum north of beijing and the underground tunnel through the hill was about 50 metres across and about 300 metres long.

Looks to me like a ger with a winter corral.