They are found especially in Scandinavia, in the German states of Mecklenburg-Vorpommern, Lower Saxony (Salongrab), Saxony-Anhalt (Drebenstedt, Leetze, Winterfeld) and occasionally in Holstein (Alter Hau).
At the large passage grave of Naschendorf, Nordwestmecklenburg all the blocks at the narrow end are arranged in a concave way, so that the corners are very prominent.
Although value was placed on especially high guardian stones, in general only glacial erratics were used that had a good surface on which to stand and therefore guaranteed stability.
This necessity is demonstrated by the guardian stone of the Dwasieden site, which did not have a good base area for stability and fell over, as the 40 cup marks on its upper surface show.
What is most impressive are the many flakes that on several piles at the stele-like blocks of the enclosure of the expanded dolmen 2 of Serrahn, Neustrelitz county, came to light.