In the dark days of the Cold War, communist Bulgaria fortified its border with Turkey, which was a member of the rival NATO alliance, by embedding scores of Soviet and Nazi tanks in a network of concrete bunkers. The bunkers have been abandoned for years.
In 2004, Bulgaria joined NATO. The old German panzers were left rusting and all but forgotten. Many of them fell prey to scrap metal hunters, who, in many cases, have left little but the chassis of a tank intact.