The farmers of the 'Funnel Beaker Culture’ constituted the first agricultural society in northern Germany, Denmark, northern Poland, and the central and northern Netherlands. They built large megalithic burial chambers: dolmens or hunebedden. Moving and erecting these heavy stones and constructing a mound of earth over the completed hunebed necessitated cooperation. For hundreds of years, dozens of people were interred in these structures with burial gifts such as hunting implements, jewellery, access, food and pottery. In the 15.5-metre-long hunebed of Drouwen (D19), there were at least 400 pots. In the area surrounding the hunebedden, traces of elaborate ceremonies and rituals have been found.