Harz National Park is a nature reserve in the German federal states of Lower Saxony and Saxony-Anhalt. It comprises large portions of the western Harz mountain range, extending from Herzberg and Bad Lauterberg at the southern edge to Bad Harzburg and Ilsenburg on the northern slopes. 95% of the area is covered with forests, mainly with spruce and beech woods, including several bogs, granite rocks and creeks. The park is part of the Natura 2000 network of the European Union.