After the find, in 1933 a small excavation was carried out by dr. He discovered two ring ditches around the grave, one of 11 m in cross section, the other of 52 m. The latter ditch make the barrow the largest in the Netherlands. Photographs taken during the excavation show that the barrow was built of sods en must have been at least 3 m high. The large dot represents the vorstengraf itself.
Green areas are forested, red areas are roads or paths.
In 1935 three more barrows were excavated, two dating to the Middle Bronze Age, one to the Late Neolithic. The area was not preserved as a area for archaeological attention, let alone as a monument. This is a pity because it is quite clear that around the 'princely grave' a large cemetery with a long history was present that had been a central site in the prehistoric landscape for a long time. Presently the site of this cemetery, after having been used as a car dump for several years, will become part of a new industrial estate. Since the topsoil of the entire area of 10 ha is polluted now it will have to be removed and cleaned.