GRAFENAU, Germany -- It has been 20 years since the Berlin Wall fell. But deep in the forest here, a red deer called Ahornia still refuses to cross the old Iron Curtain.

Ahornia inhabits the thickly wooded mountains along what once was the fortified border between West Germany and Czechoslovakia. At the height of the Cold War, a high electric fence, barbed wire and machine-gun-carrying guards cut off Eastern Europe from the Western world. The barriers severed the herds of deer on the two sides as well.

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