The Sieben Steinhäuser also Siebensteinhäuser is a group of five dolmens on the Lüneburg Heath in the NATO training area of Bergen-Hohne, in the state of Lower Saxony in northern Germany.
The Sieben Steinhäuser are located roughly in the middle of the Bergen-Hohne Training Area which lies between Bad Fallingbostel to the northwest and Bergen to the east.
A stream, the Hohe Bach ("High Brook") which is a northeastern tributary of the River Meiße in the catchment area of the Aller, flows past the stones in a north-south direction.
The only public access route to the dolmens begins at a barrier in Ostenholz, about 4 kilometres (2.5 mi) southeast of the Walsrode autobahn interchange.
The Sieben Steinhäuser gravesite was established during the third millennium BC during the neolithic funnelbeaker period by the first settled farmers.
They protect the gravesites from shell damage, because the site is located in the middle of a live firing range.
The inside dimensions of the chamber are 6.5 x 2 m. The entrance is in the middle of the southeastern side, but only the pair of supporting pillars are left.
The inside dimensions of the stocky chamber are roughly 4 x 3 m.[2] The entrance is located in the centre of the southeastern side,[2] its support stones are original whilst the capstone has been restored.
[2] Because there are no traces of stone pillars having been removed, it is suspected that this could have been used to lay out 3 to 4 more sites for planned graves during the Neolithic era.
From the fact that two of the chambers capstones (the southwestern and the centre one) have been found in halves, it is not difficult to surmise that the stone blocks were artificially split in prehistoric times.
[2]According to a legend that is recounted by many in the Heidmark area, the largest stone was fired at the Sieben Steinhäuser by the giant of Borg from a catapult at Elferdingen which was located near the "Orskarrn".