Building B is located in the Main Excavation Area/Southeast-Hollow. It has a round ground plan and measures approximately 10 metres in diameter. A total of seven T-shaped limestone pillars have so far been discovered set into its circular wall. The two central T-pillars brings the total number of monoliths in this building to nine. However, as the building is not yet completely excavated, further pillars might appear in the future. The floor of the building was excavated over several square metres in the area between the two central pillars. The floor of this building is made of a lime mortar or plaster. The inner-facing broad sides of the two central pillars carry depictions of life-size foxes (in low relief).