Bertagne, Mountain summit in Gémenos, France.

Bertagne is the highest point of the Bouches-du-Rhône department, reaching 1,042 m in the Sainte-Baume massif above Gémenos. Its pale grey limestone summit is split by vertical fissures and ridges, with low green vegetation on the lower ledges. A few thin masts and a white dome-shaped radar station stand on the flattened top.

The summit's history is tied to its radar station, the "station de la Sainte-Baume", installed at the top and operated by the civil aviation navigation centre for south-east France based in Aix-en-Provence. Military equipment is also installed there. A paved road climbs the massif's ridge and stops in front of the radar zone at about 1,020 m, below the 1,042 m summit.

The summit's radar and radio station, the station de la Sainte-Baume, is run from the air navigation centre in Aix-en-Provence, and military equipment stands beside it. The paved road up the ridge ends at this zone, around 1,020 m, which is why cyclists can ride almost to the top.

A paved road climbs the massif ridge and makes the summit reachable by bicycle; it ends at a civil aviation radar zone at about 1,020 m, just below the 1,042 m top. The summit lies on the territory of Gémenos, and the radar and military installations there are not open to visitors.

A paved road climbs the ridge to about 1,020 m, stopping at a civil aviation radar zone, so the summit can be reached by bicycle. The radar and radio station, known as the Sainte-Baume station, is run from the air navigation centre in Aix-en-Provence, and military equipment stands on top as well.