Unlike the Stakenberg and Galgenberg in the Balloërveld, which are large named burial mounds, the Mandenberg is low ridge in the southwest of the region. Nevertheless, it is the site of some 40 ancient burial mounds, all unnamed, some fairly obvious but others nearly imperceptible. Each grave is, however, indicated by a white marker post with one face painted red. These graves date from the Early and Middle Bronze Age, around 1700 - 1000 BCE.
Some of the graves were partially excavated in 1933 by archaeologist A E van Giffen, and yielded bronze rings and bracelets. In one grave were found three gold rings.