Breitentalskopf
 The Breitentalskopf is a hill in the Harz Mountains of central Germany that rises southeast of Sieber in the district of Osterode am Harz in Lower Saxony. It is 579.1 m high and separates the River Sieber from the Breitental valley (with its stream the Tiefenbeek) that gave the hill its name. Towards the southeast is the ridge of the Aschentalshalbe.