Sieber is a river of Lower Saxony , Germany , in the Harz mountains. It is 35 kilometres (22 mi) long and a right hand tributary of the Oder .
8-842: The Sieber rises at 760 metres on the Bruchberg massif and flows through Herzberg before discharging at Hattorf into the Oder which, in turn, flows into the Rhume . Its tributaries include the Große Kulmke , Große Lonau and Goldenke . In February 1910, as part of his hydrological research into the Rhumequelle , Karl Thürnau dyed the Sieber tributary of the Eichelbach (Herzberg) with six kilogrammes of fluorescein . Three days later, weakly dyed water appeared in
16-583: A result of bark beetle infestation (see photograph below). Following this insect destruction, a new natural forest, rich in its variety of species, is now growing in the heart of the Harz National Park. The Wolfswarte , at 918 m above NN , is generally considered as the summit, even if it is not the highest elevation on the Bruchberg. It is a domed hilltop ( Kuppe ) made of weathered Acker-Bruchberg quartzite. The Wolfswarte rises east of
24-669: The Bruchberg in the Upper Harz is the second highest mountain in Lower Saxony and the third highest in the Harz mountains in North Germany. It lies between Altenau and Torfhaus in the middle of the Harz National Park . The Bruchberg is more like a plateau and has no real summit. This plateau is partly covered with trees, but on the sunny southern slopes the trees have largely died as
32-666: The Wolfswarte Way ( Wolfswarter Weg ; its upper section is also known as the Upper Bruchberg Way or Oberer Bruchbergweg ) runs past Okerstein in a fairly straight line up to the Wolfswarte . This track is linked by several lateral tracks to the Steile Wand road ( Steile-Wand-Straße ) from Altenau to Torfhaus. The easiest way to get to the Wolfswarte is to take the last lateral track at a height of about 760 m, shortly before
40-562: The first carpark on the Steile Wand road and then to branch off after a few hundred metres onto the rather rough track, the Butterstieg , which is not suitable for cyclists. From Torfhaus there is a longer, but more direct route to the Wolfswarte which is about 4 km long. This is also not very suitable for bicycles. Since 2007 the Wolfswarte has been a checkpoint on the Harz Walking Route ( Harzer Wandernadel ). The checkpoint
48-544: The main source of the Rhumequelle . This was confirmed in 1980 by dye tracing carried out by the Geological Survey of Lower Saxony ( Niedersächsischen Landesamtes für Bodenforschung ). This also indicated links between the Rhumequelle and the Sieber near Hörden and the Oder near Scharzfeld . The construction of a dam was planned but never realised. As a result the Sieber valley is the only unregulated river valley in
56-766: The mountain town of Altenau and, in good visibility, the Brocken can be seen from here. The bald summit of the Wolfswarte is easily visible from other peaks in the area, notably the Glockenberg in Altenau, the Schulenberg and also from the Torfhaus. To the southwest the heights of the Bruchberg are continued by the Acker Ridge with its mountain hut , the Hanskühnenburg . From Altenau
64-473: The western Harz. The upper Sieber valley has been out-of-bounds to motor traffic since the 1980s from the Forsthaus Königshof and lies partly within the Harz National Park – the road leads to the B 242 federal highway northwest of Sonnenberg . The river gives its name to the village of Sieber in the middle of the Sieber valley. Bruchberg At 927 m above sea level (NN) ,
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