China’s observation satellite Gaofen 1, launched in April 2013 to obtain high-resolution images of the earth’s crust, has spotted secret cross-border tunnels between China and neighboring countries such as North Korea and Central Asian nations. Quoting the National Space Administration on Tuesday, the official news agency Xinhua reported that the images picked up by the satellite show “dozens” of these illegal structures located at two borders of great strategic importance to the Asian giant.
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