In the Harz, the Brocken, the highest mountain in Northern Germany, which was on GDR territory, was also strictly prohibited.
Reunification
The borders collapsed after the fall of the Berlin Wall on November 9, 1989. A few months later, on July 1, 1990, border controls were abolished and the border infrastructure disappeared like snow in the sun.
Traces of the kilometer-long Iron Curtain can only be found in the hamlet of Sorge.