Petinesca is an archeological site on the territory of Studen, a community of the Canton of Bern, in Switzerland, where Celtic and Roman vestiges were found.
The site lies at the SE edge of the Jensberg mountain.
The site comprises a Celtic fortification (Oppidum), and a fortified village dating from the Roman Empire, as a regional centre dating back to the 2nd Century B.C.
The road led from Aventicum (Avenches) through Murten, Kerzers and Kallnach to Salodorum (Solothurn) and then to Vindonissa (Windisch), along the Eastern part of the Seeland.
A bifurcation of the road ran through the steep gorge of Taubenloch and crossed the Jura through the Col de Pierre Pertuis pass and to Augusta Raurica which led to Germany along the Rhine.