Poskær Stenhus

It is located by the village Knebel on the hilly southern part of the peninsula, Djursland, at the entrance to the Baltic Sea between Denmark and Sweden in northern Europe.

[1] The central burial chamber is equipped with a capstone weighing 11 tonnes (12 tons), surrounded by 23 slabs taller than a man, forming a circle.

[1] The capstone is the lesser half of a granite slab brought to Denmark from Northern Scandinavia by ice age glaciers' movements.

The other half is a 19-tonne (21-ton) slab 2 km (1.2 mi) to the northwest, placed as a capstone on another dolmen, Agri Dyssen.

Therefore, large granite slabs have been sought out for construction purposes and many dolmens have disappeared or been damaged.

The Poskær Dolmen, as seen in this picture from 1937 (person beside it for scale)
Dynamiting drill mark from Ole Hansen's attempt to convert the barrow to building blocks in 1859