When men arrived near Paladru lake, they discovered chalk peninsulas, a vast wooded area and watery meadows. Such an environment was quite easy to conquer and valorize. So they settled in the three sites more adapted to a defensive position.

In each one of these settlements, archaeological evidences prove a common concern for the organization of the site and the building of houses that marks the natural landscape.

The three settlements show architectural, social and cultural characteristics, so it is very unlikely that this massive settling around the lake is due to chance. It would rather mean that the colonization was planned, allowed or inspired by an authority, thinking it might be interesting for both strategy and economy.