Wikipedia
Langdos (burial mound)
Langdøs (or, in Standard Danish: Langdysse) is the largest bronze age burial mound in Denmark, located in Thisted, Jutland. The burial mound is 175 metres long and was built between 1800 and 1000 BC. The 'Langdøs man' was once believed to live in the barrow. Around Easter, pins were placed into the mound by children who then played around it.
Part of the barrow has been damaged due to building activities within the city.