Unchambered long barrow

Since the 1980s, barrows of the Passy type, part of the Cerny culture,[5][6] have been discovered in the French département of Essonne in the Paris Basin.

[7] In the region occupied by the peoples of the Funnelbeaker culture (TBK), unchambered long barrows fall into the megalith category because, in many cases, their generally very low mounds, which are located mainly along the lower reaches of the rivers Elbe (Lower Elbe), Oder and Vistula, have an enclosure of megaliths, about one metre high.

East of the River Oder they are often trapezoidal or triangular with rounded tips, (Mound 9 at Sarnowo, near Konin, Poland) mostly, however, without transverse walls (megalithic and non-megalithic) dividing them into separate chambers.

Apart from the sites researched by Ewald Schuldt in Mecklenburg-Vorpommern in Gnewitz, Rothenmoor and Stralendorf there are a further 11 in the area and five more examples in the forest of Sachsenwald.

In the complex of Stralendorf (Ludwigslust-Parchim county) were six such mounds of cobbles, lying transversely and longitudinally, bounded by a 125-metre-long trapezoidal enclosure.

The barrow of Alter Hau in the forest of Sachsenwald has a length of 154 metres and is one of the longest sites in Nordic megalith architecture.

In the early megalithic period oversized earth mounds emerged, like the tumulus of Carnac, that has ciste-like elements.