Wikipedia
Gantoftadösen
Gantoftadösen (or Jättestugan - "giant's home") is a partially destroyed dolmen in the area of Helsingborg in Schonen, Sweden. The dolmen is registered with the RAÄ as Kvistofta 14:1 and was erected between 3500 and 2800 BC by members of the Funnelbeaker culture (TBK; Swedish: Trattbägarkulturen).
The rectangular chamber was about 2.8 m long and 1.4 m wide. Three large support stones hold up a metre thick roof stone of 2.5 x 2.5 m, which is partially split in the middle. On the roof stone (Swedish: takhällen) are nine cup marks, the most common form of Nordish petroglyph.