The Mittlerer Grumbacher pond is a former mining building in the Upper Harz and is located southwest of the Bocksberg. Originally it was called Herzog-August-Teich and served as a water and thus energy storage for the ore mines and smelting works of the Bockswieser train. The pond dam was built in the summer of 1675 by only 70 miners in just 10 weeks. This Staubauwerk learned in the aftermath of an increase and a partial transformation to new pond construction.
The pond dam is about 9 meters high and about 120 meters long. The water behind it measures about 250 meters in length and a maximum of 80 meters in width. Its storage volume is around 76,000 m³ of water.
In 1827, almost the dam broke on Mittlerer Grumbacher Teich. On the air-side embankment, a piece about 20 meters long slipped off, so that stood less than half a meter from the dam crest. A hastily organized large-scale rescue operation was able to prevent the imminent break of the pond dam at the last moment. The threatening catastrophe, which would also have flooded and washed away the two down-stream ponds and large parts of the village Bockswiese, thus remained and for the operation of ore mines and iron works enormously important pond could be completely repaired without emptying.
The Mittlerer Grumbacher pond can be hiked well and in a relatively short time from the nearby district Bockswiese and the campsite at the Upper Grumbacher pond. It also represents an important landmark on the waterway "Auerhahn-Kaskade". With appropriate permission may also be fished at this pond. The water is also one of the many components of the Upper Harz water shelf. Therefore, the Middle Grumbacher pond is a cultural monument under appropriate protection.
August 14, 2018
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