The stones were identified and described by Harry Huisman, an expert on erratic boulders from the Ice Ages. The huge rocks of Henblas dolmen are curious sight and it is debatable whether they were part of a man made structure or simply glacial erratics deposited. The megaliths in Wris look like they where made in concrete, because they are formed in the local puddingstone. The stones were all donated by local inhabitants so this really is a community garden created by the people of Drenthe. What we see is just the skeleton of what they built. We can tell they were a communal burial tomb. One of the capstones is some ten feet long and weighs 20 tons Why were they built There is no written history, so we really don’t know. These boulders were all collected by one man, Jannes van Echten, who spent two years travelling through Drenthe. The largest dolmen in the Netherlands, near the village of Borger, is 70 feet long. The signs also tell you their age and where they originally came from – often in parts of Southern Finland – from where they were brought here by the ice over enormous distances. Trethevy Quoit one of the best-preserved in Cornwall, UK dated to around 35002500 BCE. Simple dolmen Early form of dolmen or megalithic tomb.
Rectangular dolmen Rectangular, enlarged or extended dolmen. But in the north of the country within a radius of only 30 kilometers, 53 megalithic monuments are scattered over a. They sound like fantasy names but they are the official geological terms. Polygonal dolmen Type of dolmen with five to nine supporting stones.
The garden contains a great variety of different types of stone, many with signs showing their names – helleflint, rapakivi, uppsala granite, gneiss etc. Large and small, they were all found in Drenthe and lie here now mixed together in this unique display. At Gunderslevholm, the excavators found that the dolmen chamber was surrounded by a spread of boulders and stones up to 1m in height, held in place by kerb stones. Often mistaken for naturally occurring glacial erratic structures. A perched boulder is defined by the boulder being placed on exposed bedrock, a layer of stone or on top of another boulder. The largest ‘rock garden’ in the Netherlands contains several thousand ‘erratics’ – boulders brought here in the last but one Ice Age 150,000 years ago. A dolmen is usually a single large stone supported by three or more other stones.
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