Eresburg

Eresburg
Obermarsberg
Eresburg
Coordinates	51°27′01″N 8°51′10″E / 51.45028°N 8.85278°E / 51.45028; 8.85278
Type	hill castle
Code	DE-NW
Height	390 m above sea level (NHN)
Site information
Condition	Rampart remains
Site history
Built	before 772

The Eresburg is the largest, well-known (Old) Saxon refuge castle (Volksburg) and was located in the area of the present German village of Obermarsberg in the borough of Marsberg in the county of Hochsauerlandkreis. It was a hill castle built on the plateau of a low table hill, known as the Eresberg, at a height of 130–150 metres above the Diemel, a tributary of the Weser, in the extreme south of the Saxon Gau of Engern on the border with the Duchy of Franconia.