![]() | ||
The Rheider Au (Danish: Rejde Å) is a tributary of the Treene. Its source is on the Geest near Schleswig. In the Viking age the route Eider - Treene - Rheider Au - Schlei served as a navigation way and/or transport or trade route between places to the north and the Baltic Sea, as commercial centres functioned (see Dorestad, Haithabu).
Map of Rheider Au, Germany
References
Rheider Au Wikipedia(Text) CC BY-SA