The simple dolmen (German: Urdolmen, literally "ancient dolmen") or primeval dolmen is an early form of dolmen or megalithic tomb that occurs especially in Northern Europe. The term was defined by archaeologist, Ernst Sprockhoff, and utilised by Ewald Schuldt in publicising his excavation of 106 megalithic sites in the north German state of Mecklenburg-Vorpommern. The simple dolmen emerged in the early days of the development of megalithic monuments of the Funnelbeaker culture (TBK) and around 3,500 BC they appeared across almost the entire region covered by the stone cult structures of Nordic megalith architecture, but not in the Netherlands, in Lower Saxony west of the River Weser nor east of the River Oder and only once in Sweden (Lejeby Laholm).
Neolithic monuments are an expression of the culture and ideology of neolithic communities. Their emergence and function serve as indicators of social development.
In many cases there is no clear distinction between simple dolmens and stone cists. In the necropolis of Brüssow-Wollschow, in the Uckermark region, simple dolmens and stone cists occur together. The differences consist in the degree to which they are embedded and in the material used for the sidestones (orthostats). In simple dolmens the sidestones consist of rubble, in stone cists of slabs. Whether this was of relevance for neolithic people, remains questionable, because there are also combinations of both materials.
The smallest simple dolmens occur on the Danish island of Zealand, where the ratio of length-to-breadth of the southern half of the island (Dolmen of Jyderup) (1.7 x 0.6 m) is even less in the north. This small size led researchers such as Hans-Jürgen Beier, to refuse to give simple dolmens the status of a megalithic site. Whether, however, the equally very small megalithic tombs fulfil his conditions, is still open to question. Also in Sicily, in recent years, are being found small dolmen monuments, because around the end of the 3rd millennium BC, the west coast of the Mediterranean island was caught up in a cultural wave (bringing the bell-shaped goblet) coming the Sardinian coast, which in turn had imported from the peninsula Iberica.