The Harz is a low mountain range in the Central Uplands of Germany, famous for its historic silver mines that brought prosperity to the region and to the Kingdom of Hanover.The Harz forms part of the federal states of Lower Saxony, Saxony-Anhalt and Thuringia.It lies between the river Elbe and Weser in the states of Lower Saxony, Saxony-Anhalt and, to a small extent, Thuringia.