Sulzberg

Sulzberg is a mountain in Bavaria, Germany, near the border with Austria. It stands at the edge of the Bavarian Forest, a region known for its dense woods and quiet valleys. The mountain reaches a modest height, rising above the surrounding countryside. Two international monitoring stations for nuclear test ban treaties operate from its slopes. These stations help enforce global agreements on nuclear disarmament. The primary seismic station, called GERES, uses 25 seismometers spread across a two-kilometre radius. These instruments detect vibrations in the Earth’s crust, helping scientists track underground nuclear tests. Another station, 26DE, monitors infrasound—low-frequency sound waves that travel long distances. The mountain’s stable geology makes it an ideal location for such sensitive equipment. Visitors to Sulzberg find a peaceful, forested landscape with few signs of human activity. The stations themselves are small and unobtrusive, blending into the natural surroundings. The area offers walking trails through quiet woods, with views of the Bavarian Forest in the distance. The stations are not open to the public, but the mountain remains a place for peaceful exploration.