Entremont is a 3.5-hectare archaeological site three kilometres from Aix-en-Provence at the extreme south of the Puyricard plateau. In antiquity, the oppidum at Entremont was the capital of the Celtic-Ligurian confederation of Salyes. It was settled between 180 and 170 B.C., somewhat later than the inhabitation of other oppida, such as Saint-Blaise. The site was abandoned when it was taken by the Romans in 123 B.C. and replaced by Aquae Sextiae, a new Roman city founded at the foot of the plateau. By 90 B.C., the former oppidum was completely uninhabited.
The site contains two distinct areas of settlement surrounded by ramparts. Archaeologist Fernand Benoit named the older area, on the summit, "Ville Haute", and the lower "Ville Basse". Subsequently, it was recognised that the latter was an enlargement of the former, and they are now labelled "Habitat 1" and "Habitat 2", respectively.
Wikipedia https://en.wikipedia.org/wiki/Entremont_(oppidum)
Official Website http://www.entremont.culture.gouv.fr/
Address Aix-en-Provence 13100, France
Coordinates 43°33'7.376" N 5°26'21.238" E