At 925 m above sea level, the Achtermannshöhe in the Harz National Park is the third highest mountain in Lower Saxony and the fourth highest in the Harz mountains. It lies in the unincorporated area of Harz between the Harz-Heide route and the old Inner German Border about 6 km north of Braunlage. Its summit, covered with loose boulders, stands proud of the surrounding trees and offers a superb all-round view.