It was built between 4,000 and 3,500 BC. It consists of a single chamber, used during the Neolithic period as a burial place and possible religious cults. The polygonal chamber is made of seven enormous 8-meter-high stones. Originally, they were covered by a 7-meter-wide stone. A corridor measuring 12 meters long, 1.5 meters wide and 2 meters high leads to the chamber. The entrance was marked by a huge decorated menhir, which is now listed.
This monument illustrates the technical capacity and complexity of the social organization of the Neolithic populations that built it.
In 2019, the megalithic monument is in a very worrying state and at risk of collapse of its entire structure. The vertical stones that make up the monument, especially those in the corridor, are practically visible almost to the base, which means that it is in a progressively dangerous situation of collapse.