Altenau 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 Oberharz.
Wikipedia https://en.wikipedia.org/wiki/Altenau,_Lower_Saxony
Coordinates 51°48'1.608" N 10°27'28.51" E
