A large medieval cemetery was discovered during the first phase of the evaluation. It is next to a 12th century church a short distance from the village of Allones. Past discoveries indicate that this village was built over a Roman town. Based on the 400 burials recorded in the trenches, we can estimate that there are 3,500 tombs over the entire surface to be covered by the bypass.
The first inhumations seem to date to the 4th to 5th centuries. The north-south orientation of the graves indicates the presence of the last non-Christian Gallo-Roman communities or one of the peoples that occupied the region during the the 5th century invasions (Alans, Huns, etc.).
Starting in the 6th century, the presence of only east-west oriented graves is evidence of Christian rituals. From this time on, the cemetery becomes larger and more dense. The last burials are attributed to the 10th century. From the 12th century until the present, the cemetery seems to have been limited to a designated space near the church.

The second phase of the evaluation has confirmed the high archaeological potential of the Beauceron plateau and the area around the road that runs from Chartres to Orléans, since the 2nd century BC at least. Eighteen archaeological sites, extending from the Neolithic to the beginning of the Middle Ages, of which three are exceptional, have been discovered.