@ Zone Braams.
 
This image was captured at a small military location know as "Zone Braams".... It was an Nato communication centre in Belgium.
It was build in 1969 and fully operational in 1971, hidden right in the Belgian countryside.
 
Its has been used for military communications between nato countries. Rumor has it that they are going to rebuild an modern version with 4 antennas instead of 1.