The Register wrote about a strange military installation in the remote village of Huangyangtan in China, found by the Google Earth community:
Zooming in for a closer look, we have what appears to be a 900x700m scale model of a mountainous landscape......complete with lakes, valleys and snow-capped peaks.
It's clear that a huge amount of time and resources has been invested in this perplexing scale model, which incidentally represents an area of around 450 by 350 kilometers. The big question is: why?
The only sensible explanation we can come up with is that it's a training aid for pilots - possibly helicopter jockeys - designed to familiarise them with the landscape should military action ever be required.