The Oker is a river in Lower Saxony, Germany, that has historically formed an important political boundary. It is a left tributary of the River Aller, 128 kilometres in length and runs in a generally
Confluence of the Oker and Aller near Müden
Confluence of the Oker (left) and Gerlachsbach (right) in Altenau
Schladen-Werla is a municipality in the district of Wolfenbüttel, in Lower Saxony, Germany. It was formed on 1 November 2013, when the municipalities of the former Samtgemeinde Schladen: Gielde, the t