Finaly I finished the high terrain map with historical wheeltrack research. You can see a broad bundle existing out of red lines crossing the eastern part of the Ballooërveld. It is a map with a lot of data clarified in the leganda.

The detail of the map is showing the Stroetweg (green line) and the tumuli called Mandenberg (white dots). The bundel is divided in two among other things, caused by the Spakenberg and maybe through the existence of the Celtic fields. The fields are recognizable in the black background.