The “Dreieckige Pfahl” is a historic boundary stone in the Harz National Park and is located between Torfhaus and Oderbrück.

Originally, the stone marked a border triangle, then the border between the Kingdom of Hanover and the Duchy of Braunschweig and later the border between the GDR and the Federal Republic of Germany. Today, the state border between Lower Saxony and Saxony-Anhalt runs along this point.
There used to be a managed hut near the triangular pile, but it was burnt down in 1945. Today there is a refuge on this site, which also houses the stamp box.
From the wayside cross, a path leads south toward Wurmberg; to the north, the path leads to the Brocken; to the east, Sandbrinkstraße takes you to Schierke; and to the west, the paths lead to Oderbrück and to the memorial cemetery for victims of World War II.
The shortest route leads from the small parking lot at the Ehrenfriedhof to the Dreieckiger Pfahl, from where you can continue your hike to the Brocken (HWN 9) or the Wurmberg (HWN 156).
