Koboltstaler Köpfe

The Sieberstollen is an adit (German: Wasserlösungsstollen) for water drainage in Sankt Andreasberg, in the Harz mountains. It was created during mining in the Upper Harz and named after the river Sieber into which it discharges its water. The opening position is in the Sieber Valley.The first 11.7 km of the 13.1 km adit forms part of the Upper Harz Water Regale and has been declared UNESCO World Heritage Site in 2010.

Schadenbeek is a small river of Lower Saxony, Germany. It flows into the Krumme Lutter north of Bad Lauterberg.

The Schadenbeeksköpfe are two summits on a southeastern outlier of the Aschentalshalbe in the Harz Mountains of Germany, about 3.6 kilometres southeast of Sieber in the district of Göttingen in Lower Saxony. Their highest peak is 605 metres above sea level. In addition they separate the Schadenbeek stream, after which they were named, from the upper Krumme Lutter. About 1 kilometre east of the Schadenbeeksköpfe lies the Wolkenhügel Pit (Grube Wolkenhügel), in the valley of the Krumme Lutter, which closed in June 2007. A refuge hut not far from the Schadenbeeksköpfe is a checkpoint (no. 153) in the Harzer Wandernadel hiking badge system.

Silberhütte was once a village in the formerly free mining town of Sankt Andreasberg in the Harz mountains in Germany, but since its merger on 1 November 2011 it has been part of the borough of Braunlage. The name of the village goes back to the silver works that was existed here until 1912 and which smelted the ores from the mines around Sankt Andreasberg. According to Ließmann (2003), the smelting of the ores was carried out here soon after the opening of the Sankt Andreasberg silver mines. These naturally had a raised arsenic content. The silver works was located at the confluence of the Wäschegrundbach and the Sperrlutter - so that there was enough water power to drive the machines in the smeltery. Not only did the smelting workers here have to endure toxic emissions but, even in older accounts, there is talk of the massive nuisance caused by toxic, arsenic-containing, fumes from the smeltery which, in unfavourable weather conditions, swept into the town and occasionally forced the people living there to flee. The first smelting works are recorded at this locality around 1550. At the beginning of the Thirty Years' War, the smeltery was sold and demolished. When the silver mining industry flourished again in the 1680s, a new larger smelting works was built, which - rebuilt and extended several times - was in operation until 1912. In 1836, the responsible mining authority allowed the construction of a separate arsenic works on the Silberhütte site. In addition to arsenic trioxide, a toxic white powder, arsenic glass was also produced. Handling the powdery poison was very difficult. The workers were only sent into the chimneys to sweep the arsenic with a damp cloth in front of their faces - without a special bonus, hardly any worker was willing to sweep the arsenic dust. A contemporary report by master smelter, Seidensticker, stated that, "the arsenic trioxide produced cannot be weighed because this would cause disproportionately high costs and endanger workers' health more than the rest of the arsenic work put together."

The Grünhirscher Stollen (also Grünhirschler Stollen or Grüne Hirschler Stollen, German: Green Stag's Adit) is an adit (German: Wasserlösungsstollen) for water drainage in Sankt Andreasberg, in the Harz mountains. It was created during mining in the Upper Harz and named after the valley Grüner Hirsch (German: Green Stag) between the mountains Galgenberg and Glockenberg. It leads from the Samson Pit to the south-west of the Galgenberg.The first 7.1 km of the 10.2 km adit is part of the Upper Harz Water Regale and has been declared UNESCO World Heritage Site.

The Aschentalshalbe is a ridge in the Harz Mountains of Germany that is up to 685 m above sea level (NN). It lies south of the village of Sieber in the unincorporated area of Harz in the district of Göttingen in the state of Lower Saxony.

Kleine Kulmke is river of Lower Saxony, Germany, in the Harz Mountains, a tributary of the Große Kulmke. The Kleine Kulmke rises at a height of 690 m near the Schmierplatz on the Auf dem Acker ridge north-northeast of Sieber in the district of Göttingen and flows initially southwards to its confluence with the Verlorene Kulmke ("Lost Kulmke", 428 m), from which it is separated by the Kleiner Wurzelnberg hill. It then flows in a southwest to south-southwest direction before uniting with the Große Kulmke ("Big Kulmke") after 3.4 km (2.1 mi) at a height of 392 m. The valley of the Kleine Kulmke partly belongs to the Sieber Valley (Siebertal) nature reserve.

The Gropenbornskopf is a northern offshoot of the Aschentalshalbe in the Harz Mountains of central Germany, two kilometres east of Sieber in the district of Göttingen in the state of Lower Saxony. It is 581.2 metres high and was named after the Gropenborn stream that flows downs its western side, and which it initially divides from the River Sieber.

The Übelsberg is a 651.3 metre high mountain in the South Harz, which lies southwest of Sieber in the district of Göttingen in Lower Saxony. It sits astride the watershed between the Grade Lutter and the Krumme Lutter rivers. The mountain is linked via a ridge to the Aschentalshalbe in the north and the Mittelberg in the south.

Große Kulmke is a river of Lower Saxony, Germany. The Große Kulmke is a tributary of the Sieber in central Germany. It rises near the natural monument of Mönchskappenklippe near the ridge of Auf dem Acker, north-northeast of Sieber in the district of Göttingen in Lower Saxony. It then flows mainly in a southerly direction, separated from the Sieber by the Königsberg. After 5 km (3.1 mi) it merges with the Kleine Kulmke at an elevation of 392 m (1,286 ft). The valley of the Große Kulmke is part of the Sieber Valley (Siebertal) nature reserve.

Verlorene Kulmke is a small river of Lower Saxony, Germany. It flows into the Kleine Kulmke west of Sankt Andreasberg.

Sankt Andreasberg is a former town in the district of Goslar, in Lower Saxony, Germany. Since 1 November 2011, it is part of the town Braunlage. It is situated in the Harz, approximately 7 km west of Braunlage proper, and 20 km east of Osterode am Harz.