At the end of the Würm glacial environmental conditions differed completely from those today. During the last Ice Age the investigation area was part of the periglacial area and covered by tundra vegetation. The slopes were instabilised and formed by solifluction processes with the consequence that sand and stone debris as products of intense frost weathering were washed into the rivers. The river bed of the Blies was - in contrast to today - braided and divided in numerous branches and gravel banks. The further development is determined by a vegetation succession typical for the holocene in middle europe and characterized by the climate warming and the plant's ability to spread from their glacial refuges.
In the early holocene the Blies in the area of Reinheim/Bliesbruck probably was divided in several branches in which conspicous processes of accumulation and erosion took place. Evidences for such branches could be found for example in a profile between the tomb of the princess and the villa: a thick band of organic material can be followed several meters and thins out at the margins.
The sediments of the Blies valley give information about the phases of landscape development. This is much associated with the human activities in the area.  At least since the early mesolithicum the larger flood plains in the Saar-Lor-Lux area are settled. Nevertheless the human impact is small in the beginning. In the Blies valley existed burned and fallow land ( the burned land is still to recognize in the profiles as charcoal bands). From the mesolithicum until roman time there was nearly no change in forms of the valley bottom as the human impact was small (verified by a low sediment accumulation). The natural vegetation still was largely intact.
The potentially natural vegetation in the investigation area is a mixed oak-hirnbeam forest on the hillsides and on the plateaus whereas in the floodplain a soft-wood riverside forest would grow. This vegetation probably also dominated at the beginning of the roman-celtic settlement phase. It is assumed that the hillsides were wooded and the flood plain was covered by sparse soft-wood riverside forest.