The Haltern Hills (Halterner Berge) comprise the three ridges of Hohe Mark (146 m), Borkenberge (133 m) and Haard (154 m) located respectively northwest, east and south of the German town of Haltern am See in Westphalia. They are the only submontane subunit in the major natural region of Westmünsterland, and are found in the southeast of the regi...