Schulenberg im Oberharz

The Oker Dam (German: Okertalsperre) is a dam in the Harz mountains in Lower Saxony, Germany. It is fed by the River Oker.

Altenau ([ˈaltə.naʊ] ) is a town and a former municipality in the district of Goslar, in Lower Saxony, Germany. Since 1 January 2015 it is part of the town Clausthal-Zellerfeld. It is situated in the middle of the Harz mountains, between Clausthal-Zellerfeld and the Brocken. It was part of the former Samtgemeinde ("collective municipality") Oberharz.

The Polster Valley Wheel House (German: Polstertaler Zechenhaus) lies in the Polster valley about three kilometres from Altenau in the Upper Harz region of Germany and is surrounded by a campsite. The wheel house was built in 1729 and provided power for the pumping station of the Polsterberg Pumphouse (Polsterberger Hubhaus) with two water wheels until the early 20th century.

The Abzucht, also known in its upper reaches as the Wintertalbach, is a 12.1-kilometre (7.5 mi) long, orographically left-hand, tributary of the Oker in Lower Saxony, Germany. The stream flows through the town of Goslar.

Romkerhall (also frequently called Romkerhalle) is a popular tourist destination on the River Oker in the Harz Mountains of Germany. There is a public car park here as well as a hotel and restaurant opposite the Romkerhall Waterfall. Romkerhall lies within the unincorporated area of Harz in the Lower Saxon county of Goslar in the Harz Mountains. The hotel and waterfall form a small tourist attraction which is marketed as the "Kingdom of Romkerhall - the smallest kingdom in the world!" (German: "Königreich Romkerhall − das kleinste Königreich der Welt!")

The Polsterberg Pumphouse (German: Polsterberger Hubhaus) is a pumping station above the Dyke Ditch in the Upper Harz in central Germany which is used today as a forest restaurant. As part of the Upper Harz Water Regale it was built in the 18th century and was used to lift the water needed in Clausthal for the mining industry from the Dyke Ditch (Dammgraben) to the level of the highest pond, the Hirschler Pond. Aside from this water hoist, the Dyke Ditch supplied, and still supplies, water over ditches and tunnels to the Hausherzberg Ponds and the Lower Peacock Pond (Unterer Pfauenteich). The problem was however, that, as it happened, the most productive silver mines in the Upper Harz mining region, the Caroline Pit and the Dorothea Pit, were high up in the mountains and could only be supplied with water power from the Hirschler Pond. The motive force for the wooden piston pumps was won in the Polster valley below by two water wheels. The headrace for these water wheels was brought via the Heller Valley Ditch (Hellertal Graben) from the Heller valley and from the Fortune Pond over its Bottom Ditch (Grundgraben), but frictional losses and poor efficiencies meant that a considerable amount of headrace water was required in order to lift just a few litres of water from the Dyke Ditch. These wheels transferred their output power over 260 and 560 m long flat rods made of wood to the pumping station on the Polsterberg hill. In the pumping station the water from the Dyke Ditch was pumped 8 m higher and fed into drinking troughs from which it was then further transported via the Hutthal Ditch and Huttaler Widerwaage to the Hirschler Pond, or via the Jägersbleek Tunnel and Ditch. The Polsterberg Pumphouse also acted as living accommodation for the master pumper and the ditch keepers, as well as a bar (Schankstube). At the beginning of the 20th century the wooden structures were replaced by electrically-drive pumps; the original can still be seen in the pumphouse by the ditch. Today the building is listed. It is purely run as a restaurant and is a popular destination for walkers from Altenau and Clausthal-Zellerfeld. Like the nearby Sperberhai Dam House it lies on the Harz High Road, the B 242.

The Feigenbaumklippe is a rock formation in the Oker valley in the Harz mountains of central Germany. They lie on the hiking trail from the Kästeklippen crags to Romkerhall Waterfall. These granite rocks, which show clear signs of "wool sack weathering" (Wollsackverwitterung) are a favourite destination for hikers and offer a good view of the valley towards the west. The observation point has safety railings.

The Kästeklippen, often shortened to Käste, is a rocky tor above the Oker valley in the Upper Harz mountains of central Germany. It lies at a height of 602 m above NN. Near the Käste are other similar granite rock formations such as the Hexenküche ("Witch's Kitchen"), Mausefalle ("Mousetrap"), Feigenbaumklippe and the Treppenstein. Next to the observation platform is a protruding rock which resembles the face of an old man and is called Der Alte vom Berge ("Old Man of the Mountain"). The rocks consist of granite "wool sacks", typical of the Harz region. The Kästeklippen (Klippen = crags) are a popular destination in the Harz. From here, there are views to the Sudmerberg hill in the borough of Goslar. Numerous paths lead from the Oker Reservoir, Romkerhall, Oker, Göttingerode and Bad Harzburg up to the Käste. The most important access route is the Kästestraße. It runs from Bad Harzburg up to the Schlackenplatz on the Morlberg and then continues at a height of just under 600 m over the Alte Schlewecke and the crags of the Stiefmutterklippen to the Käste. From there it goes downhill again, past the Hinterer Ziegenrücken and Vorderen Ziegenrücken to Oker. The Kästestraße was once tarmacked all the way from Bad Harzburg to the Käste. Remnants of the asphalt surface can still be seen today. From the beginning of April to the end of October a bus service runs from Bad Harzburg to the Käste. The Kästehaus restaurant was demolished in 2019. The Kästehaus is checkpoint no. 118 in the Harzer Wandernadel hiking trail network.

The Treppenstein is a rock formation in the Oker valley in the Harz mountains of central Germany. It lies on the trail from the Romkerhall Waterfall to the Kästeklippen. The rocks consist of granite and have clearly undergone so-called "wool sack weathering" (Wollsackverwitterung).The Treppenstein is a popular destination and part of the system of checkpoints (no. 117) in the Harzer Wandernadel hiking trail network. The summit has safety railings and may be climbed using steps hacked out of the rock and flights of stairs attached to the rocks. From the summit there is a view towards the west. In addition, part of the rock formation, the Kleine Treppenstein is used for rock climbing. The routes here are rated as Grade VI (UIAA).

The Jägersbleeker Teich in the Harz Mountains of central Germany is a storage pond near the town of Clausthal-Zellerfeld in the county of Goslar in Lower Saxony. It is one of the Upper Harz Ponds that were created for the mining industry. The reservoir lies in the Upper Harz within the Harz Nature Park. It is located around 3.5 km east-southeast of the quarter of Clausthal. Its water surface lies at 586.5 m above sea level (NN), it has a retention capacity of 380,000 m³ and its dam is 13.65 m high. A little below the Jägersbleeker Teich is another pond, the Fortuner Teich. The history of the Jägersbleeker Teich goes back to around 1670.Near the southeastern end of the dam is a refuge hut for hikers named after the forestry official (Forstamtmann), August Weppner, called the August Weppner Hut, inside which is checkpoint no. 127, Weppner Hütte, Jägersbleeker Teich, of the Harzer Wandernadel hiking network.