There are also two great dolmens in Schleswig-Holstein (Wees, Flensburg county and in Nebel auf Amrum), several in western Lower Saxony, but quite a few in Saxony-Anhalt (e.g. Lüdelsen 3).
Since the width of northern megalith sites is limited due to the source material used, the main design aim of their longitudinal extension was an effort to increase the size of the chambers.
Great dolmens reach an average interior size of 14 cubic metres, a scale only otherwise matched by that of the gallery and passage grave.
Like passage graves, great dolmens are a type of layout, in which the centre capstones were sometimes placed in a bay configuration (Jochbauweise, see picture).
The great dolmen of Gaarzerhof, which initially lay within a very short rectangular frame, was eventually covered with a circular mound.